ISSN 0031-0204

fJ -If"'.f; f. ~ ~ ~• .:k. !~t

Transactions and Proceedingsof thePalaeontological Society of Japan
New SeriesNo. 112

Palaeontological Soci ety of Ja pan
December 30, 1978

EditorItaru HAYAMI

Associate editors Tsunemasa SAITO and Tomowo OZAWA

Officers for 1977 -1978
Honorary President: Teiichi KOBAYASHI
President:
Councillors:

Ryuzo TORIY AMA
Kazuo ASAMA, Kiyotaka CHINZEI, Takashi HAMADA, Tetsuro HAN AI,

Itaru HAY AMI, Syozo HAY ASAKA, Hisayoshi IGO, Tadao KAMEl, Kametoshi
KANMERA, Tamio KOTAKA, Tatsuro MATSUMOTO, Tsugio SHU TO, Yokichi
TAKAYANAGI, Toshimasa TANAI, Hiroshi U]IIE
Members of Standing Committee:

Kazuo ASAMA (Finance), Kiyotaka CHINZEI(General Affairs), Takashi HAMADA (Foreign Affairs), Tetsuro HANAI, Ita.
ru HAY AMI (Transactions), Hisayoshi IGO (Planning), Kametoshi KANMERA(Special Papers),

Ikuwo

OBATA (Membership),

Yokichi TAKA YANAGI("Fossils"), Hiroshi UJIIE, Juichi YANAGIDA
Secretaries:

Ienori FUJIYAMA (Special Papers), Kunihiro ISHIZAKI ("Fossils"),

Tsunemasa SAITO

and Tomowo OZAWA (Transactions),

Hiromichi

HIRANO and Yasumitsu KANIE (Membership), Toshiyuki YAMAGUCHI(General Affairs)
Auditor: Tatsuaki KIMURA

The fossil on the cover: Original figure of Podozamites Reinii GEYLER,
1877, from the Tetori group.

GEYLER'S description marked the onset ofmodern palaeontology in Japan.

All communications relating to this Journal should be addressed to the
PALAEONTOLOGICAL SOCIETY OF JAPAN,
c/o Business Center for Academic Societies,
Yayoi 2-4-16, Bunkyo·ku, Tokyo 113, Japan.
Sole agent:

University of Tokyo Press, Hongo 7-3-1, Tokyo, Japan.

Trans. Proc. Palaeont. Soc. Japan, N.S., No. 112, pp. 371-409, pis. 49, 50, December 30, 1978

694.

QUATERNARY OSTRACODA FROM KISARAZU NEAR TOKYO*MICHIKO YAjIMA
Geological Institute, Faculty of Science, University of Tokyo

Abstract. This paper gives a detailed account of the Quaternary ostracodefauna of Kisarazu area near Tokyo. Three fossil ostracode assemblages are discernible: i) a sand flat assemblage, ii) a shallow mud assemblage, and iii) a silty
sand assemblage. In systematic paleontology, eight new species, Pseudopsammocythere tokyoensis, Ambostracon ikeyai, Cornucoquimba ishizakii, Actinocythereis kisarazuensis, Lixouria nipponica, Buntonia han aU, Paracytheridea bosoensis and Cytheroma?
hanaU, are described.

and megafauna. Ostracodes were collected from the localities whose environmental
conditions were analysed giving special
attention to the occurrence of molluscs
and the nature of burrows. Then the
distribution of ostracodes was interpreted
in light of the inferred environmental
conditions.

Introduction
Information about Quaternary ostracodes from japan is scarce. In his pioneer work on the japanese Cenozoic
ostracodes, HANAI (1957a-c, 1959a, b, 1961a,b) described some Pleistocene species fromthe Sawane Formation and the Setana
Formation of northeastern japan, theKatase Formation and the Sakurai silty
sand (Kisarazu) of central japan. ISH!ZAKI (1976) also described some Pleistocene ostracodes from the Furuya Mud,
Shizuoka Prefecture.
The purpose of this study was to obtain basic data for a systematic study on
the marine ostracodes occurring in thejapanese Pleistocene. Fossiliferous marine
deposits of Kisarazu near Tokyo wereselected for field observation. In thisarea, marine Quaternary sediments, whichcontain abundant, well-preserved ostracodes and molluscs, are exposed in thecliffs along the coast of Tokyo Bay. In
order to infer Pleistocene environments
inhabited by the ostracodes, detailed fieldobservations were made on the sediments

Field observation
The upper Pleistocene sediments ofKisarazu inclined slightly and homoclinally toward the northwest, represent thelast stage of filling-up deposition of the
Paleo-Tokyo Bay, which opens its mouth
toward the east (Y ABE, 1914). They can
be classified stratigraphically into nine
members called A-I in upward sequence.
Correlation between various stratigraphic
units used by previous authors is presented in Table 1.
A Sand.- The A Sand, the lowest member exposed in the area, is distributed
narrowly along the east coast of Tokyo
Bay from Hitomi to Owada (Locs. 1-8). It
consists of a lower 7 m of red-brownish,medium-grained sand, and an upper 5 m* Received Dec. 27, 1977; read Jan. 22, 1977
at Koganei.

371

Michiko YAJIMA

372

~a

r-;--;lf~bru;;-]LJC

Bh

H. ..~-

~

~

Dd

SOm

:~y-:~:~.~~-2~~~\~!
",-"-.,:,~-,,,

.'

40

30

20
10

~.
16

21

22

23

200

25

400

6COm

'vvv",'-v."i~::::~~~~;--~ _____ _HA

Text·fig. L Geological cross sections. Upper, section along a road from Honnawa (16)to Katsudoyatsu (25); lower, section along the coastal road of Tokyo Bay from Hitomi (4)to Sakurai (26,27). Numerals represent locality number. a, massive silt; b, thin laminatedsilt; c, sand; d, gravel; e, cross laminations; f, pumice tuff; g, oyster banks; h, Dosinia
anguiosa; i, type 1 burrow.
Table L

Comparison of the stratigraphic units among various works.

KOZJ:vIA 1966a

KIKUCHI 1972b

AOKI and BABA 1973

Kioroshi M.

Anegasaki F.

YAJlMA 1977"Se"
I Member

"Su"

-~ ~

"Shi"

"Sa"
"Ko"

Kioroshi M.
~.~

G SandKamiiwahashi M .
~

I-<

cd

Z

~

"Ke"

H SandKamiiwahashi M.
F Silt

.~
I-<

cd

"Ku"

Kiyokawa M.

Z

Kiyokawa M.

"Ki"

E Member
D Gravel~

Kamiizumi F.
"U"-"Ka"

Semata F.

C Silt"I"

Jizodo F.

B Member"A"

Naruto F.

A Sand694.

Quaternary Ostracoda from Kisarazu

of yellowish brown or grey well-sorted
medium- to coarse-grained sand with crosslamination.
White cylindrical aggregates of whitesand grains which attain 1 to 2.5 cm inlength and 3 to 4 mm in diameter are
scattered in the upper part of the A Sand
throughout the area, forming irregularly
lenticular bodies of 2 to 3 m in diameterand 50 to 70 cm in thickness (Locs. 5, 6).
Most of the cylindrical aggregates lie
parallel to bedding, but some are oblique.
forming cross lamination. This feature
has been regarded as trace fossils madeby isopods of the genus Excilolana (KIKUCHI, 1972a).
Simple tube-like burrows of about 6 cm
in diameter and 50 to 100 cm in length
are often branched and are disposed nearlyvertically at intervals of about 20 cm inthe uppermost horizon of the A Sand.
Most of them terminate upward at the
top of the A Sand. Some, however, seemto extend further upward to certain bedding planes in the lower part of the B
Member. The wall of tube is made ofmud, and the inside is filled with muddy
sand of the B Member. It may be considered that the burrowers lived duringa certain period of time which is represented by the lowermost several centimeters of the B Member, though the evidences are found mostly in the underlying A Sand. These burrows, describedand illustrated by OHSHIMA (1967), andherein called Type 1, are quite similar insize and shape to those of Upogebia major, a decapod.

B Alember.-Deposition of the B Member begins with the lowest mud which
also fills the burrows in the A Sand. The
B Member, about 20 m in thickness
throughout the area, is chiefly composedof alternation of thin layered sand andsilt. It outcrops along the coastal road373

of Tokyo Bay from Hitomi (Loc. 4) to
Sakata through Owada (Locs. 9, 10), andthe unconnected exposures are extended
further inland to the Kita-Koyasu area
(Loc. 24). Litho- and biofacies of thismember are remarkably different between
southern and northern areas. In theformer (Hitomi to Owada), silty elementsof alternation predominate and oysterbanks are developed in the basal 3 m ofsilt. The lowest horizon of the B Member
is characterized by 20 em thick of muddy
sand with abundant shell fragments which
are generally too fragmentary to warrent
species identification. Valves of somelarger molluscs, Glycymeris yessoensis andCrassostrea gigas, however, lie with convex sides upwards, and form a substratum
for growth of oysters. Individuals of anoyster species, Crassostrea gigas, attach
their umbones to these valves and growupward to form the first "generation" ofoysters. The oysters of next "generation" attach themselves to the side of
the valves of the first "generation" andgrow again upward so as to form a
spreading dendritic colony of oysters (cf.
CHINZEI, 1971). Various growth stages ofoyster colony are preserved in the mud.
Together these colonies form a large
oyster bank 10 m long and about 3 m
thick. Mud surrounding the oyster colonies contains such fossils as Balanus
rostratus and foraminifers, but ostracodes
are rare. Oyster banks are covered byblack to grey micaceous silt with thinly
laminated sand or by a silt layer 10 mthick with pebbles, granules, and moulds
of Pecten albicans, Mytilus sp. andbarnacles. The silt is intercalated atsome places with lenticular bodies ofcoarse-grained sand and granules, morethan 15 m in length and about 7 m in
maximum thickness. Many molluscan
fossils such as Tapes japonicus and Glycymeris yessoensis occur from these lenses.

Michilco Y AJIMA

374

Text-fig. 2.

Geological map.

In the northern area (Owada to Sakata
and Kita-Koyasu area), the B Member iscomposed of alternation of thin silt layers(6 cm) and medium-grained sand layers
about 15 cm thick. Sand layers yield
abundant molluscs whose specific names
are listed in Table 2. The abundance ofcold "Oyashio" type species, i. e. Glycymeris yessoel1sis and Spisula sachalil1ensis,
characterizes the fossil assemblage ofthis horizon (KOZIMA, 1966b). They aremostly disarticulated, abrased and broken.
In addition to mechanical destruction,
shells often show evidence of attack byboring sponges and annelids. Two kindsof tube-like burrows, both of which are.vertical to the bedding plane but different

A, A Sand; B, B Member; C, C Silt;in size, are also found in sand layers. One
is about 8 mm in diameter and 5 cm inlength, and another about 2 to 3 mm indiameter and 5 cm in length. The wall oftube is made up of silt, and the inside isfilled with mediumgrained sand. In general,shape of these burrows resembles those of
the isopods, Tylos and Talorchestia, andthe decapod Scopimera, all common inhabitants of the intertidal zone (OHSHIMA, 1967).
This type of burrow is different fromType 1 bur- row in size and thickness ofwail, and is here called Type 2 burrow.
C Silt.- The C Silt is widely distributed
from Hitomi to Obama and conformably
overlies the B Member. It is about 10

694.

Quatenwry Ostracocla jl"O'In Kisaraz~~

375

~@
~
~

....
~A ~B ~c D D
:':::
H
F []
G
~

•

:::

.:', ' , ' , '•E

D, D Gravel; E, E Member; F, F Silt; G, G Sand; H, H Sand; I, I Member.

to 15 m thick and is composed of thinly
laminated silt. The Tapes japoniclls-bearing middle part of the C Silt, whichreaches 5 m in thickness, shows slumping fold structure (Loc. 17) accompanied
by lenticular bodies of medium- to coarsegrained sand (Loc. 14). Sand lens contains allochthonous shells of the molluscan
species listed in Table 3. The upper partof the C Silt is composed of thin layered
silt. In the southern area at Owada itchanges into sand with pebbles and cobbles (Loc. 10). In the northern area from
Hatazawa to Obama (Locs. 18 to 19), theupper laminated silt contains shell moulds
in the sandy layer, and is intercalatedwith sand lenses which contain the mol-luscan species listed in Table 3. Tapes
japoniclls, Glycymeris yessoensis andSllchiu17! costatll17! are dominant and articulated shells of Pecten (Mizuhopecten)
tokyoensis, a large pectinid having shelllength of more than 20 em, are found inlife position with the flat left valve upward. However, Sllchi1l17l costatu71Z is represented by many water-worn specimens,
and thus the fossil assemblage of the C
Silt may be the result of mixture ofvarious sources of supply. Type 1 burrows and bivalve moulds occur in theuppermost part of sand lense.
An upper white fine acidic tuff and alower acidic tuff, each about 15 em thick,are found two-in-set in the uppermostMichiko YAJIMA

376
Table 2.

Fossils of molluscs and barnacles from the B Member.
Locality number

Molluscs

10

22

24

Collisella (Conoidacmea) heroldi (DUNKER)

C

Turcica coreensis PEASE
Suchium giganteum (LESSO:'»
S. costatum (KIENER)

R
R
R

A

R

H omalopoma sangarense (SCHRENCK)R

Batillaria cumingii (CROSSE)
Neverita (Glossaulax) didyma (RODI:'>G)
Tectonatica severa GOULD
Tonna luteostoma (KOSTER)
Neptunea (Barbitonia) arthritica (BERNARDI)

C
R

R
R

C

Siphonalia cassidariaeformis (REEVE)C

Tritia (Tritoneila) fuscolin2ata (E.A. S~IITl-l)
Olivella japonica STERNS
Noditerebra (Noditerebra) reticostata (Y OKOY A~IA)R
R

Fulgoraria prevostiana (CROSSE)

R

C

Ringicula doliaris GOULD
Dentalium (Paradentalium) octangulatum hexagollum GOULD
Nucula (Lameilinucula) tokyoensis YOKOYAMAR

Glycymeris (Glycymeris) yessoensis (SOWERBY)
Arca boucardi miyatensis Qy A 'VI A

CAnadara (Scapharca) broughtolli (SCHRENCK)
Striarca (Galactella) interplicata (GRABAU & KING)

R

R
R

R

C

R

R

C

R

Chlamys (ChlamJls) farreri (JONES & PRESTON)
Pecten (Mizuhopecten) tokyoensis TOKUNAGA

CA

RCrassostrea gigas (TIIUNBERG)

Rc

Vene rica rdia (Megacardita) ferruginosa (ADA~IS & REEVE)
Carditella (Carditellopsis) toneana (YOKOYAMA)R

Callista chinensis (HOLTE,,)R

Dosinia (Phacosoma) j aponica (REEVE)
Gomphina (Macridiscus) veneriformis (LAMARCK)
Tapes (Ruditapes) japonicus (DESHAYES)
Mactra (Mactra) sulcataria REEVE
Spisula (Pseudocardium) sacha! inensis (SCHRENCK)
Gari (Gobraeus) kazusensis (Y OKOY A'VIA)

R
R
R

R
A

A

A

R
R

R
R
R

Solen grandis DU:'-IKER
Myadora japonica HABE

R

R
R

BarnaclesA, abundant; C, com men ; R, rare.

R

R

Macoma tokyoensis MAKIYAMASolidobalanus (So!idobalanus) socia!is (HOEK)
S. (Hesperibalanus) hesperius (PILSBRY)
Balanus rostratus HOEK

R

R
R

c
c

694.
Table 3.

Q'Uaternary Ostmcoda from Kisamz'U

377

Fossils of molluscs and barnacles from the C Silt.
Locality number

Molluscs

suchium giganteum (LESSO:")
S. costatum (KIEKER)
Homalopoma sangarense (SCIIREi"CK)Daronia yokoyamai OYAMA
Batillaria cumingii (CROSSE)

14

16

R

R
R

C

R

R
R

R

R
R

R

I

18

R

Neptunea (Barbitonia) arthritica (BERNARDI)
Ringicula doliaris GOULD
Glycymeris (Glycymeris) yessoensis (SOWER BY)
Anadara (Scapha rca) broughtoni (SCHRE:\CK)

C

R

R
A
R

Chlamys (Chlamys) farreri (JOi'iES & PRESTO:")C
C
R

Pecten (Notovola) albicans albicans (SCIIROTER)

R

P. (Mizuhopecten) tokyoensis TOKu:"AGA
Anomia sp.
Crassostrea gigas (THui"BERG)
Ostrea sp.

R

A

R
R
R

Clinocardium (Clinocardium) californiense (DESHAYES)
sunetta (Cyclosunetta) concinna DUI'KER

R
R

Tapes (Ruditapes) japonicus (DESHAYES)

C

A

spisula (Pseudocardium) sachalinensis (SCIIRE:"CK)A

AGari (Gobraeus) kazusensis (YOKOAYiYIA)

A
R
R

Barnacles

Balonus rostratus HOEKR

Megabalanus rosa (PILSBRY)

R

horizon of the C Silt throughout the area.
The lower tuff contains appreciable
amount of mafic minerals.

D Gravel.-The boundary between the
C Silt and the overlying D Gravel may
correspond to the basal unconformity of
the Narita Formation of previous authors(KIKUCHI, 1972b; AOKI et aI., 1973a). Although the uneven, possibly erosionalsurface can be observed between the two
members at Loc. 10, the D Gravel always
rests upon the uppermost tuff of the C
Silt throughout the area. Thus, the writer
failed to find convincing evidence that ofappreciable discontinuity of deposition
between the C Silt and the D Gravel. It
is quite likely that the gravel is not abasal conglomerate but merely the baseof the deltaic deposits.
The D Gravel is distributed from Owada
to Sakurai. In the southern area from
Owada to Hatazawa, it is 3 to 5 m thickand is composed of pebbles and granules
with a matrix of coarse-grained sand.
Rare shell fragments were unidentifiable.
The D Gravel thickens toward thenorth by intercalation of massive silt
layers. The silt layers thicken and thegravel gradually becomes coarse sand to-378

JvIichiko YAJIMA

ward north forming alternating layers
reaching 1 m in thickness near Obama.
Further, silt predominates toward northand the intercalated coarse-grained sandlayers become 10 to 20 cm thick near
Sakurai. There, the D Gravel is about
10 m thick with an intercalation of silt,
6 m thick. The silt is typically a dusty
yellow-green when wet, and greenish-grey
when dry. Wood fragments and pumice
particles are found commonly in the silt.
Thus the gravel bed is confined to theuppermost and lowermost parts of the D
Gravel at Sakurai.
Subrounded to flattened pebbles of siltstone are characteristic of the gravel bed.
A mould of Palliolum (Delectopecten) peckhami which occurs in one of the siltstone
pebbles suggests they were derived fromthe Kazusa Group (Pliocene and Pleistocene) immediately to the south. Irregularbodies of coarse-grained sand in the gravel
often show varieties of cross-laminations.
E Member.- The E Member, about 6 to
8 m thick, conformably overlies the D
Gravel and is exposed extensively over
the area from Hitomi to Kazusa-Kiyokawa(Loc. 42). It is composed of sand andsilt beds, characterized by graded bedding.
The each bed is 1 to 2 m thick and has
a textural gradation from coarse-grained
sand at the base and fine silt at the top.
A number of Type 1 burrows, about 5 cm
in diameter and 20 cm or more in length,with fillings of pumiceous sand and granules, are found in a bed of 1 m in thickness. The upper surface of this bed lies
about 3 m below the top of the E Member. The silty part contains abundantwood fragments and pumice particles.
The uppermost 1 m of silt again contains
Type 1 burrows which attain 3 to 4 cm
in diameter.
In the vicinity of Kazusa-Kiyokawa,the lithofacies characterized by gradedbedding change laterally into the wellsorted, grey, medium-grained sand containing molluscan fossils. Current-strewn
valves of Spisula sachalinensis, lying convex side upward, form several layers inthe sand.
F Silt.-In some localities (Locs. 10, 14,
23, 24 and 27), the F Silt is separated
from the E Member by some notablestratigraphic breaks. V-shaped channelsof various size are eroded into the E
Member lying below. These channels
have a maximum width of about 20 m
and depth of 6 to 7 m, and are filled withbluish grey silt containing abundant granules of black sandstone and chert, andconsiderable amount of wood fragments.
Thus it may be concluded that the depositional break and time gap exist between the E Member and the F Silt.
The F Silt is exposed along the east
coast of Tokyo Bay from Owada to
Kazusa-Kiyokawa through Sakurai andfurther inland-ward along the route from
Kita-Koyasu to Katsudoyatsu. It is only
2 to 4 m thick and is composed mainlyof bluish-grey silt with abundant pumice
particles and Type 1 burrows. The bed
contains many species of fossil molluscs
including Dosinia angulosa, Crassostrea
gigas, Anadara broughtoni, and Panopea
japonica. Dates by fission tracks of thepumice particles fall between 147,000±
9,000 and 143,000± 11,000 years B. P. forthese shell bed (SUZUKI, 1976).
Complete valves of Dosinia angulosa
are embedded vertically to the bedding
plane. The inside of shells is mostly
empty, but some are partly filled withlaminated sediments. The sediments fallen into the cavities through the small
opening along the contact margin of twovalves are much finer than those of thesurrounding sediments. The mode of occurrence strongly suggests that Dosinia

694.

Quaternary Ostracoda from Kisarazu

angulosa was buried while in living position. Panopea japonica also occurs rarely
and in life position. Oyster banks of thesmall scale develop at Kita-Koyasu (Locs.
23, 24). The upper part of the F Silt
contains moulds of molluscs such as
IV/acoma sp.
G Sand.- The G Sand conformably overlies the F Silt and is distributed near
Sakurai. It is about 2 to 5 m thick andis composed mainly of grey fine-grained
well-sorted pumiceous sand. The sand,containing numerous molluscan species
listed in Table 4, echinoderms, bryozoans
and solitary corals, has been called "Sakurai Shell Bed" by KOZIMA (1966a, b) andOYAMA (1967). Fossils occur as scatteredmasses of irregularly packed shells.
Table 4.

:379

Among the molluscan species, Pecten albicans, Limopsis forslwlii and several
others which dominate the assemblage,
are shallow bottom inhabitants (about 20
to 50 m in depth) of the "Kuroshio" typewarm sea of the present Japanese coast.
Valves of Pecten albicans are usually
articulated.
Unidentified tube-like burrows are rare.

H Sand.-The H Sand lies conformablyon the G Sand and is distributed in thenorthern part of the area. It is composedof the lower greyish muddy sand about
3 m thick, and the upper well-sorted
medium-grained pumiceous sand about 3
m thick. It gradually thickens northward.
In the fossil bed of the lower muddy
sand the following taxa predominate:

Fossils of molluscs and barnacles from the G Sand
Locality number

26

Molluscs
Calliostoma (Tristichotrochus) consors (LISCHKE)C

I 29 I 33 I 36

Rei

Homalopoma sangarense (SCIIRE1'CK)
Sinum javanicum (GRIFFITH & PIDGEON)
Neverita (Glossaulax) rei:liana (DU1'KER)

27-C-i---C-I--

I R

N. (G.) didyma ( R b D l " G ) [IIC-------------------------

Tectonatica severa (GOULD)
Eunaticina papilla (G)'IELI")

I R I

I

R

Cymatiu11l (Reticutriton) tenuiliratum (LISCIIKE)
Morum (Onimusiro) grande (A. ADA;>,IS)

!

I

:

I

C

R

R_I _____ __T_O_l_U_w_lu_t_e_os_t_o_m_a_O_<_u_S_T_E_R_)_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _Ceratostoma (Ocenebra) modesta FCL TaX

R

Coralliophilla costularis (LA:VIARCK)R

Siphonalia fusoides (REEVE)

A

Nassarius (Zeuxis) caelatus (A. ADAyIS)

R
R

Ficus subintennedius (d'ORllIGNY)
Fusillu:: perplexus (A. AOA)'IS)
Cancellaria (Sydaphera) spengleriana DESHAYES

A

A

C
C

-R' C
-A
--1
C
I

Inquisitor jeffreysii (E. A. S:VIITH)CCI. cosibensis (Yo KaY AyIA)

R

Lophiotoma (Lophioturris) ieZicotrapis (ADA:VIS & REEVE)

R

C

C

C

c

C
C

Michiko Y AJIMA

380._Locality number
Molluscs

Terebra serotina ADAMS & REEVE
Strioterebrum (Cinguloterebra) naumanni (YOKOYAMA)
Punctotereba (Granuliterebra) bathyrhaphe (E. A. SMITH)
Eocylichna braunsi (YOKOYAMA)
Dentalium sp.

I

26

I 36

C
C

A

A

A

A

A

- - - -- -- -

C
A

C

R
A

A

A

C

A

A

A

- - - -- -- - - - -CPecten (Notovola) albicalls albicans (SClIROTER)
Anomia cytaeum GRAY
Crassostrea gigas (THUNBERG)
Cycladicama cumingi (HANLEY)
Lucinoma concentricum (YOKOYAMA)

A

Lutraria sieboldi REEVE
Arcopagia (Merisca) diaphana (DESHAYES)
Sinonovacula constricta (LAMARCK)
Panopea japoniea ADAMS

33

C

Glycymeris (Glycymeris) vest ita (DUl'KER)
Arca boucardi miyatensis OYAMA
Anadara (Scapha rca) broughtoni (SCHREl'CK)
Stria rca (Galactella) interplicata (GRABAU & KIl'G)
Chlamys (Chlamys) Jarreri (JONES & PRESTON)

Pillucina (WaUucina) striata (TOKUNAGA)
Fulvia mut iea (REEVE)
Callista chinensis (HOLTEN)
Clausinella (Placamen) tiara (DILLWYN)
Paphia (Paphia) naganumana OTUKA

I

29
C

C
C

Nuculana (Nuculana) yokoyamai KURODA
Saccella gordonis (YOKOY A~IA)

S. conJusa (HANLEY)
Acila (Acila) divaricata (HINDS)
Limopsis (Oblimopa) Jorskalii A. ADAMS

27

C

R
R
R

- -- -- -- -

R

A

C

A

A

C

C

A

C
C

A

- -- -- -- - R
A

A

A

A

A

C
A
A

A

A

A

C

C

A

A

C
C

- -- - - - - - -

C

C

C

C

C

A

C
C

Barnacles

Balanus poecilotheca KRUGER
B. rostratus HOEKChirona (Striatobalanus) tennuis (HOEK)
Megabalanus rosa (PILSBRY)
Solidobalanus (Solidobalanus) social is (HOEK)
Boscia oulastreae (UTINOMI)

R
R

R
R

R
R

R
R

R
R

R

R
R

- -- I R

r:

M.mbulT hickn . . s (m)NE"--',' :.: •...••-::;;.. ~ :0:.•..••.•...•' .• :.-t"~;-:.--;-:--:....: ••••. :... :.',' :', .-.------.v v v y..'1.-.'1. Y.• ~ ..-.:. y y-~_-:"~'C:'_=:'=Y';:-;:-=:'':Y.:-=-=::-:·v_~:.;''';__~-=-=:.,!::=_=_=v:_-:::-:,-----...:.......:;-..:::--..:::-~-==~-::.': "::.-::.. -·';ia~';\:t:~:1:jtffuS

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Text-fig. 3. Schematic stratigraphic succession. a, massive silt; b, thin laminated silt; c, alternation ofthin layered sand and silt; d, sand; e, gravel; f-j, fossil occurrences (f, Crassoslrea gigas; g, Tapes japonicus,
Glycymeris yessoensis and Spisula sachalinensis; h, Pecten (Mizuhopecten) tokyofins'is; i, Pecten albicans andLimopsis (Oblimopa) forskalii; j, Dosinia angulosa) ; k, type 1 burrow; 1, type 2 burrow; m, trace fossils madepossibly by isopods of genus Excilolana; n, pumice tuff; 0, peat. Numerals represent locality number.

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382

iVlichiko Y AJ I M A

pumiceous sand. Moulds of articulated
Gomphina (MacridisClts) melanaegis arefound embeded vertically to the bedding
plane.
Two kinds of Type 2 burrows are excavated into the pumiceous sand of theupper H Sand. One has a diameter ofabout 5 mm and an average length of 10
cm. The other is about 2 mm in diameterand 4 cm in length. The burrowers may
have been isopods or decapods similar to
those found in sand layers of the B Member in the northern area.
I Member.- The I Member is almost
horizontal and forms the basal depositsof the wide terrace standing about 60 m
above the sea level. It is distributed in
the northeastern region and unconformably overlaps the gently tilted lower beds.
In northern exposures it is disconformablewith the underlying H Sand, while it rests
unconformably upon the uneven surfaceof the C Silt in the southern area. It is
about 12 to 15 m thick, and consists of alower conglomeratic sand with siltstone
at the base, and upper alternating bedsof ill-sorted sand and silt. A considerable number of pumiceous tuff layers ofvarying thickness and a peat layer areintercalated in the I Member. No marine
fossils have been found from the I Member.
The I Member is regarded, at least inpart, as non-marine deposits by the existence of a peat layer at the middle
horizon, and may be correlated with theAnegasaki Formation (AOKI, 1968) known
from the north of this area.
Ostracode assemblages

76 species of ostracodes were found in
54 samples from 23 localities. A complete list of ostracodes from all samples
can be found in Table 5. Text-fig. 5

shows the stratigraphic and geographic
distributions of ostracodes.
No ostracodes were found in the A
Sand. Ostracodes are extremely rare in
the oyster banks of the B Member, represented by only 3 separate valves in
80 g of the sediment. They are also
poorly represented in the upper sandlayers of the B Member, ranging from 1
to 42 individuals per 80 g. In the sandlenses of the C Silt, ostracodes occur
rather commonly. attaining an averageof 76 individuals per 80 g. No ostracodes
were found in the entire D Gravel andthe E Member, except for the fossiliferous
sand of the E Member in the vicinity ofKazusa-Kiyokawa, where the sand contains 44-90 individuals per 80 g. In general, the F Silt includes moderate numberof ostracodes ranging from 93 to 828 individuals per 80 g, except for a sample
from the oyster bank (Sample no. 57, from
Loc. 23) which contains only 3 specimens
in 320 g, and a sample from the easternarea (Sample no. 7, from Loc. 34) which
attains 1904 individuals per 80 g. A small
number, 15 individuals per 320 g in Sample no. 105 from Loc. 32, may be explained by ill-preservation which is suggested by dissolved surface of the carapace. Ostracodes are extremely abundantin the G Sand, reaching about 7328 individuals per 80 g. In the H Sand ostracodes occur in moderate number, averaging 788 individuals per 80 g, but only inthe lower muddy beds.
Three factors seem to affect the ostracode abundance, i. e. original abundanceof animals, transportation after death ofanimals and the preservation throughdiagenetic and weathering processes_
Among these, the effect of weathering
may be inferable from field observationsof sediments. No ostracodes were foundin the localities where molluscs and othermegafossils were dissolved from tk:.

694. Q'uaternary Ostracoda from Kisamzu
moulds. Examples may be seen in thefollowing samples: Sample no. 27 from
Loc. 17 (C Silt), Sample no. 106 from Loc.
25, Sample no. 47 from Loc. 27, Sample no.
108 from Loc. 38, Sample no. 117 from Loc.
42 (F Silt), Sample no. 58 from Loc. 31 (GSand). The distribution of these samples
in the sediments is extremely localized andis found usually at the margin of the fossiliferous beds.
For further information on original
abundance of animals and the effects ofthe transportation, analyses of the species
composition was performed and is presented below.
A Sand.-Ostracodes are totally absent.
B Mem be r. -Three specimens, H oweina
call1ptocytheroidea, Cythere lutea o11lotenipponica and Munseyella japonica, are rarein the sility matrix of oyster banks (Sample no. 120 from Loc. 4). However, noneof them are brackish water inhabitants
in modern waters.
The ostracodes from the medium sandlayers of the B Member are listed inTable 5 (Sample no. 23 from Loc. 9, Sample no. 54 from Loc. 21, Sample nos. 42,
52, 53 from Loc. 22, Sample no. 61 from
Loc. 24). The assemblage is characterized
by abundant or common occurrence of
Aurila munechikai, Loxoconcha (Loxocollcha) laeta, Pontocythere miurensis, Ruggieria (Keijella) bisanensis, Xestoleberis
hanaii, and Loxoconcha (Loxoconcha) optima. Among these six species, the firsttwo inhabit the leaves of Zostera on shallow sand bottoms; the last two species
are found commonly in tide pools, andRuggieria (Keijella) bisanensis crawls justbelow the sediment-water intersurface ofshallow mud bottoms. These five species
are represented in the B Member mostly
by thick, adult valves which are seemingly resistant to destruction. The carapace of the five species are nearly of thesame size. The sorting index of the sand383

of the B Member is as small as lA, suggesting long term drifting of the sandwhich contain valves of these species.
Conversely, Pontocythere miw"ensis isfound in sand fiats in the well-sorted sandoff the present open coast. The sand issimilar to that of the B Member. It may
not be merely chance, therefore, that, inthe B Member, this species is represented
by both adults and instars. In conclusion the ostracode assemblage of the B
Member seems to be a mixture of the B
Member itself. It is also noteworthy that
occurrence of genus Howeina is restricted
to the B Member, suggesting a colder
climate at that time. since the known
occurrence of Howeina leptocytheroidea inmodern seas is limited to the area northof Tsugaru Strait along the Pacific coast.
C Silt.-The species composition andabundance of ostracodes from two sandlenses of the C Silt are shown in Table 5(Sample no. 25 from Loc. 14, Sample no. 55
from Loc. 18). Species of the Zostera
habitat i. e. Aurila 11lztnechikai and Loxoconcha (Loxoconcha) laeta are abundant.
Shallow sand fiat species, Pontocythere
miurensis, P. japonica; deeper silty sandspecies, Callistocythel"e subjaponica, Schizocythere kishinouyei, Coquimba ishizakii
n. sp., Proteoconcha tomokoae; tide pool
species, Xestoleberis hanaii, lllfutilus assi11lilis; and shallow silt species Spinileberis quadriaculeata are characteristic of
this assemblage. The assemblage is similar to those of the B Member. Certainly
they represent a mixture of species fromvarious habitats of the shallow sand andmud bottoms. In addition to the above
species assemblage, a sample from theupper horizon of the C Silt (Loc. 18) contains abundant Paracytheridea bosoensis
n. sp. This species is represented in thissample by abundant adults with several
instars, suggesting an environment of the
C Silt relatively deeper than that of theiVlichiko Y AJIMA

384

:.~

:.:

H 0'_
____

. /

c

- - l-

B

~O ~

I

:: 0

:

12

24

19

26

20m

IS

13 14

15

11_

u

0

0

22

0

10

- UU

9

A
2

10

I~O iJ.

U 21
15

6

§

7

8

5

o
4

Text-fig. 4. Columnar sections. a, massive silt; b, thin laminated silt; c, alternation ofthin layered sand and silt; d, alternating beds of ill-sorted sand and silt; e, alternation ofsand and silt characterized by graded bedding; f, sand; g, gravel; h, peat; i, pumice tuff; j,oyster banks; k, sampling horizons where ostracodes were found; 1, sampling horizons where
ostracodes could not be found.

B Member. It is interesting to note thatfrom this locality articulated valves ofPecten (J\iJizuhopeeten) tokyoensis occur
abundantly, in life position. This is thelatest probable autochthonous occurrenceof this species before the extinction ofthis lineage.
D Gravel.-Ostracodes are totally absent.
E Member.- The species composition of
the ostracode assemblage of the E Member is shown in Table 5 (Sample no. 119
from Loc. 40, Sample no. 2 from Loc. 41,

Sample no. 36 from Loc.42). Pontoeythere
miurensis, Sehizoeythere kishinouyei, andAurila 17luneehikai are abundant. Munseyella japonica, Hemicytherura cuneata,
Loxoconcha (Loxoconcha) hattorii and Callistoeythere subjaponiea are common. The
assemblage seems to be closely similar to
those of the B Member and of sand lenses
in the C Silt.
F Silt.-One sample from the oysterbank of the F Silt (Sample no. 57 from
Loc. 23) contains 3 specimens of ostracodes
in 320 g represented by 2 species (Spini-

694.

Q'uaternary Ostracoda from KisaraZ1L
NE

.'.

"

..

.'

:

42

Malllb

mJeD

.h
ad

D

leberis quadriaculeata, Loxoconcha (Loxoconcha) laeta). The species compositionof the ostracode assemblage of the F Silt
shown in Table 5 (Sample nos. 601, 602,
4, 15, 16 from Lac. 26, Sample nos. 501,
502, 503, 504, 514, 515, 516, 517 from Lac.
27, Sample nos. 506, 511, 507, 508 from
Lac. 28, Sample nos. 44, 45, from Lac. 29,
Sample no. 105 from Lac. 32, Sample no. 7
from Lac. 34) is dominated especially in
its lower half, by crawlers that live justbelow the water-sediment interface ofshallow mud bottoms of bays. The species
include: Ruggieria (Keijella) bisanensis,
Spinileberis quadriaculeata, Cytheromorphaacupunctata, Neomonoceratina microreticulate, and Nipponocythere bicarinata. Together these species comprise more than
90% of total number of individuals.
Abundant juveniles characterize this assemblage as well. Grain size analysis
suggests very low level water energy ofthe depositional environment. The recon-

385

naissance sampling of living representatives of these five species indicates thatthe microhabitat of each species does notalways overlap much, a fact reflecting
the slight differences in their salinity
preferences. It is still difficult to determine whether the assemblage is influenced
by post-marten transportation or by environmental fluctuations over long periodsof time. In either case, the transported
distance seems short and is restrictedwithin the area of the silt bottom.
The species composition of the upper
part of the F Silt shown in Table 5 (Sample no. 517 from Lac. 27, Sample no. 508
from Lac. 28, Sample no. 7 from Lac. 34),
is different from that of the lower half.
The number of species increases and thenumber of mud dwellers diminishes to45-60% of total number. Common species
other than mud dwellers include those
associated with the sand bottom andZostera habitats.
G Sand.-Species composition and abundance of ostracodes in the G Sand areshown in Table 5. Samples were collectedfrom upper horizon at 8 localities (Sample no. 107 from Lac. 25, Sample no. 43
from Lac. 29, Sample no. 513 from Lac. 30,
Sample no. 35 from Lac. 33, Sample no. 32
from Lac. 34, Sample no. 33 from Lac. 35,
Sample no. 34 from Lac. 36, Sample no. 1
from Lac. 37) and from upper and lower
horizons at Lac. 26, 27 and 28 (Sample
nos. 13 (upper), 5 (lower) from Lac. 26,
Sample nos. 521, 519, 518, 520 (upper), 6(lower) from Lac. 27, Sample nos. 509 (upper), 510 (lower) from Lac. 28).
Mast of the species making up the assemblage of the upper part of the F Silt
also occur in the G Sand. In the G Sand,
however, the assemblage becomes completely dominated by Loxoconcha (Loxoconcha) laeta, Aurila 17lunechikai, Hemicytherura cuneata, and Xestoleberis hanaii,
i. e. species found in Zostera or on sandMichiko Y AlIMA

386

H

G
F

108;(

xt21.

x117

119.

_2 _36Eo.1000-9000/80g.100- 1000Bc

.10-100
,41

~xltl

~

x 0

x27

.5

.518,519,520,521 .510

.13.6
.16

.517
.504

B

.15
• 503,515,516• 4• 502,514• 601 602
• 501
x 47
x 46

.509

.508
.507
.511
.506

A

Text·fig, 5.

Ostracode abundance. Numerals represent sample number,whose exact horizons are shown in text-fig, 4,

to silty sand bottoms on which Zostera
thrives. The assemblage is no doubt
heterogeneous mixture of ostracodes winnowed from several different habitats.
However, the G Sand assemblage is definitely different from that of the upper
part of the F Silt, because it includes
Kobayashiina hyalinosa and Paracytheridea
bosoensis, species which are consideredcharacteristic of the silty sand bottom,
suggesting somewhat deeper water thanthat of the Zostera sand, Moreover thisconclusion agrees quite well with thatbased on the megafossils, discussed in thepreceding chapter.
H Sand,- Ruggieria (Keijella) bisanensis
is the most important species of the lower
silt part of the H Sand. This species
makes up 20% of the assemblage in the
Sample 60 from Loc. 29, 23% in the Sample 505 from Loc. 28, and 22% in the
Sample 512 from Loc. 28. Loxoconcha(Loxoconcha) laeta and Aurila munechikaiprobably from Zostera beds, Pontocythere
miurensis from sand flat and Buntonia
hanaii n. sp. and Cornucoquimba tosaensis

Table 5. List of Pleistocene ostracode species from Kisarazu near Tokyo. Numberof individual specimens including both adults and juveniles is shown in roman type. Number of juveniles is shown in italics. Number of separate valves is included.

694.

Quaternary Ostracoda from Kisarazu

MemberB

Local i ty number

4
120

Sampl e number

21
54
2 1

9
23

1 Neones_idea oligodentata (KAJIYAMA)
2 Propontocgpris (Propontocgpris) attenuata
3 Clithrocytheridea? japonica (ISHIZAKI)
4 Pontocythere japonica (HANAI)
5 P. miurensis (HANAI)
6 P. sUbjaponica (HANAI)
7 Krithe japonica ISHIZAKI

387
E

C

22
52
6 2

42
5 2

24
61

53
7

4
11

IB

14
25

55

41
2

42
36

1

(BRADY)

2
3 1
1

1
1
4
4

2
6 3 17 6
4
1

7 2

2
4
1 1 26 4
10 2 10

1

1
2
1

4

4

3

1
23 2
7 5 14 2

8 Parakrithella pseudadonta (HANAI)

9 Pseudopsammocythere tokyoensis n. sp.
10 Munseyell jal!!!.nica (HANAI)

1

4

8

3

11 Callistocythere alata HANAI
12 C. hayamensis HANAI

13 c. reticulata HANAI
rugosa HANAI
unda ta HANl\Iundulatifacialis MAHAI
japonica HANAI

14 c.
15 c.
16 C.
17 c.
18 c.
19

1 1
2 1

2
1

!
i
I

4
2
2
3

1

3

pumila HANAI

c. subjap:mica HANAI

20 c. sp.

11

21 CytherC1 lutea omotenipponica HANAI
22 Schizocythere kishinouyei (KAJIYAMA)
23 Paijenborchella triangu12ris HANA!
24 Neomonoceratina microreticulate KINGMA
25 Spinileber is quadriaculeata (BRADY)
26 Hemicythere? miii (ISHlZAKI)
27 Ambostracon ikeyai n. sp.
28 lIurila munechikai ISHlZAKI
29 11 .. puncta ta (MUNSTER)
30 Muti1us assimilis (KAJIYAMA)
31 Brad1eya? sendaiensis ISHlZAKI
32 Cornucoquimba tosaensis (ISHlZAKI)33 Coquimba ishizakii n. sp.
34 Proteoconcha tomokoae (ISHlZAKI)
35 Trachu1eberis scabrocuneata (BRADY)

. "I'
I
I

,

I
I11

1

1

5 4
3 1

8
1

7
1
1 1
2
1713 10 98 3
9 2 10 7
1
1
1
1 1
1
1
1
1
1
1
2 I
2
1

1
9 3
4 1
4 1

1
1
1
1

14 5
1 1

I

I

I

1
5

5 1 6 59 5 1212
11 1 6 2
11 3 6 1

5
1

I22

2

1

1410

I

I
I

1 1

4

2
13 2 13
7 3 2
4
4

1

9 6

1

1

1

4 1
1

15 2 11 3
1

1 1
2 2

7 11
1

-

1

I1 5 31 5 31

I
!

,

i

I

2 2i

1 11

8

!

3
1 1

1

5 3
9 7

1 1

I
I

21- 1 1
1

6 1

1
4 3

I

7 1
1 1

1

1

4235

2 2

1

1

5 3

5 3

1
2

1

3 3
1
6 3

2 1
3
7 4
1
2

:

I 2 11 2 1

I

I

1

5

24~1

25
3
11
240

114
34
35
240

1
1
5 3
2

3 2 24 4

,

i

,

1

4
10

5

1
9 5

2

2 1

2

4
1

I 4 l'
I

I 1 :I
31
l'

2

1

I

3
80

7

5 41

2

1

3

1 1

I

1 1

I

2

1

I

2

1

1

I

1

total number of juveniles
total number of species
weight of sample (in gram)!

I(lSHlZAKI)

total number of individuu1s

!

i1

I

37 1Icanthocythcreis? mutsuensis ISHTZAKI
39 1Ictinocythereis kisarazuensis n. sp.
40 Echinocythereis? bradyformis lSHIZAKl
41 E.? bradyi ISHlZAKI
42 Ruggieria (Keijella) bisanensis (OKUBO)
43 Lixouria nipponica n. sp.
44 Buntonia hanaii n. sp.
45 B.? japonica ISHlZAKI
46 Ambocythere japonica ISHlZAKI
47 Bassler i tes obai ISHlZAKI
48 Bythoceratina hanaii ISHlZAKI
49 Hemicytherura cuneata HANAI
50 HoO tricarinata HANAI
51 JJoweina camptocytheroidea RANAI
52 H. loptocytheroidea (HANAI)
53 Semicythcrura henryhowei HANAI & lKEYA
54 S.? miurcnsis (HANAl)
55 S. skippa (HANAI)
56 Cytheropteron miurense HANAl
57 c. uchioi HAMAl
58 Kobayashiina hyalinosa HANAl
59 Paracytheridea bosoensis n. sp.
60 Loxoconcha (Loxoconcha) bispinosa KAJIYAHA
61 L. (L.) hattorii ISHIZAKI
62 L. (L.) japonica ISHlZAKl
63 L. (L.) laeta ISHlZAKI
64 L. (L.) optima ISHIZAKI
65 L. (L.) uranouchiensis ISHlZAKI
66 L. (L.) Vlva ISHlZAKI
67 Cytheromorpha acupunctata (BRADY)
68 Nipponocythere bicarinata (BRADY)
69 Xesto1eberis dentata SCHORNlKOV
70 x. hanaii ISHlZAKI
71 x. sagam~C'ns~s KAJIYAMA72 Paradoxostoma oblongum KAJlYAJ.1A
73 P. triangulum KAJIYAMA
74 Cljtherois asamushiensis ISHlZAKI
75 Paracytherois tosaensis lSHlZAKI
76 Cytheroma? hanaii n. sp.

i

16

1

4 1

5

36 T. sp.
38 11.? niitswnai

4 1
7 6

{+:2

1

1
ill

I ~~! 1 1

1

3
1
1

7 1

3

,

1

i

1
126
48
28
240

10
2
6
480

87
17
23
480

43
4
16
40

198
72
27
240

44
18
15
80

90
30
22
80

165
65
31
160

Michiko YAJIMA

388

F

snecies
1
2
3
4
5
6
7
8
9
10
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694. Quaternary Ostracoda from Kisa1'azu

389

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species
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lVlichiko YAJIMA390

Text-fig. 6.

Sampling localities.

Main roads are shown by broken lines.

from deeper silty sand are characteristicof this assemblage. Except for the abundance of Ruggieria (Keijella) bisanensis,
no essencial difference can be ascertianed
between ostracode assemblages found in
the G Sand and H Sand.

Conclusions
A number of conclusions emerge fromthis study and are summarized below.
1. The Upper Pleistocene sediments ofKisarazu near Tokyo represent the laststage of filling-up deposition of so-called
Paleo-Tokyo Bay. The sediments can beclassified stratigraphically into nine members, A to I members in upward sequence.
Each member overlies the lower member

conformably, except for a diastem between the E Member and the F Silt, andan unconformity between the H Sand andthe I Member. There is no evidence
throughout the area suggesting the existence of the so-called basal unconformityof the Narita Formation at the base of
the D Gravel.
2. Detailed field observations have been
made by paying special attention to theoccurrence of molluscs and burrows.
Oyster banks in the B Member and the
F Silt, Pecten tol?)'oensis in the C Silt,
Dosinia angulosa in the F Silt, and GomPhina (Macridiscus) melanaegis in the H Sand
show autochthonous occurrences. Burrows
occur in almost all members except for
the D Gravel and the I Member. They
are classified into two types. The bur-

69-'1.

QuaternarY Ostracoda front Kisarazu

rowers were probably decapods or isopods.
The assemblage which is dominated by"Oyashio" type molluscan species occurs
in the B, C and E members and that
including the abundant "Kuroshio" typemolluscan species occurs in the F, G andH members. All members were depositedin the shallow waters of embayments,
mostly in the subtidal zone. A cyclictendency in sedimentary deposition has
been observed in this area. One cycle
begins with shallow brackish water faciesof the B Member, attains its maximum
depth at the upper part of the C Silt andends up with shallow marine E Member,while the second cycle starts with shallow
brackish water facies of the F Silt, thewater deepened to 20-50 m in the G Sand.
The cycle ends with the shallow water
marine H Sand. This inundated phase of
the second cycle is probably correlatedwith the Shimosueyoshi transgression.
The D Gravel and the lower part of the
E Member which is characterized by thegraded bedding may be deltaic insertionof the sediment supplied by the nearby
river. The I Member is a non-marine
deposit and unconformably overlies thegently tilted lower members.
3. Ostracodes are found from the B, C,
E, F, G and H members. The ostracodefauna can be classified into three assemblages: i) a sand fiat assemblage, which
is found from well-sorted sand of B, C
and E members. It is composed of a
mixture of species from various habitatsof the bottoms of shallow embayments,
including tide pools, Zostera leaves, andbottoms and sand fiats, ii) a shallow mud
assemblage which occurs in bluish grey
silt represented by the F Silt. Species
diversity is very low. The crawlers comprise 90% of the total assemblage. They
live on and in mud bottoms of shallow
embayment but are slightly different intheir salinity preferences. iii) a silty

391

sand assemblage, which is found in theupper sand lens of the C Silt and the G
Sand and H Member. Ostracodes areabundant and species diversity is high,because of allochthonous species fromvarious shallow water environments, inaddition to the deeper water silty sandspecies.
Systematic paleontology

All types and illustrated specimens aredeposited in the collection of the Univeristy
Museum, University of Tokyo (UMUT).
Specimen numbers are prefixed CA for
Cenozoic Arthropoda.
The following abbreviations are used in
the systematic section:
S: Specimen measured (L, R, C for left
valve, right valve, carapace)Loc : Sampling locality (see lists ofsampling localities)
Me: Measurement (L for length, H forheight, W for width)
N: Number of observations
X: Arithmetric mean (mm)s: Standard deviation (mm)
V: Coefficient of variability
OR: Observed range (mm)
Systematic description
Subclass Ostracoda LATREILLE, 1806
Order Podocopida SARS, 1866
Superfamily Cytheracea BAIRD, 1850
Family Cytherideidae SARS, 1925
Subfamily Krithinae MANDELSTAM, 1958
Genus Pseudopsamlnocythere
CARBONNEL, 1966

Pseudopsaml1locythere tokyoensis n. sp.
PI. 50, figs. 3a, b.

Text-fig. 7, figs. la, b.

392

lII.ichiko Y AJIMA

2b

20

30
Text-fig. 7. Internal views. a, left valve; b, right valve. x llO.
Figs. la, b. Pseudopsammocythere tokyoellsis YAJ[~"'A, n. sp.
1a. Paratype, CA 8411; Sample no. 512, Loc. 28, H Sand.
lb. Holotype, CA 8410; Sample no. 512, Loc. 28, H Sand.
Figs. 2a, b. Ambostracoll ikeyai Y AJ[~IA, n. sp.
2a. Paratype, CA 8434; Sample no. 2, Loc. 41, E Member.
2b. Paratype, CA 8435; Sample no. 2, Loc. 41, E Member.
Figs. 3a, b. Coquimba ishizakii YAJI~IA, n. sp.
3a. Paratype, CA 8431; Sample no. 55, Loc. 18, C Silt.
3b. Paratype, CA 8432; Sample no. 55, Loc. 18, C Silt.

Diagnosis.-A species of the genus
Pseudopsammocythere, characterized by avertical row of four ovate adductor scars
in which the median two are slightly
oblong.
Description.-Carapace elongate subrectangular in lateral view. Highest atslightly posterior to middle. Anterior

margin equally rounded, dorsal margin'
nearly straight, ventral margin slightly
sinuated at middle, dorsal and ventral
margins nearly parallel, posterior margin
obliquely rounded. In dorsal view, carapace
slender, sides slightly inflated, thickest at
posterior third.
Surface smooth and pelucid. Eye tubercle

694.

Quaternary Ostracoda from Kisarazu

obscure. Normal pore canals simple open
type, moderate in number, evenly scattered. Radial pore canals straight andradiate, often bifurcate, 15 to 20 in number, along anterior, ventral and posterior
margins.
Marginal infold extremely broad anteriorly, narrow posteriorly. Inner margin
not parallel to outer margin, sinuate anteriorly and nearly straight along posterior
margin. Anterior vestibule well develped,
deep in lower two-thirds. Posterior vestibule shallow, nearly parallel to posteroventral margin. No selvage or list on
marginal infold.
Hinge pseudadont. Long groove of rightvalve with extremely faint crenulation in
its anterior half. Muscle scar field slightly
anterior to middle. Adductor muscle scars
consisting of a vertical row of four ovatescars, whose median two slightly oblong,and together forming a vertically oval
outline. Single frontal scar large andquadrilobate. Two dorsal scars long andslender.
Dimensiolls.-Measurements of specimens from Sample no. 512 of the H Sand
(Loc. 28).
Me

N

X

s

V

OR

L L

4
4
1

0.533
0.238

0.005
0.015

0.94
6.30

0.50-0.54
0.22-0.25
0.50
0.23

S

H

R L
H

Types.-Holotype, UMUT-CA 8410, aright valve (PI. 50, fig. 3a. Text-fig. 7,
fig.lb); Figured paratype, UMUT-CA 8411,
a left valve (PI. 50, fig. 3b. Text-fig. 7,
fig. la).
Type-locality.-Loc. 28 (Sample no. 512,
H Sand).
Remarks.- This species is closely similar
to Pseudopsammocythere simi lis (MULLER,
1894) described by SISSINGH, 1972, fromthe Pliocene sediments of the Crete and393

the Rhodos Islands, southern Greece, inlateral outline and form of vestibule, butdifferent in the shape and distribution
pattern of muscle scars.
Occurrence.- This species occurs commonly from the G Sand, and rarely fromthe F Silt.
Family Cytheridae BAIRD, 1850
Subfamily Leptocytherinae HANAI, 1957
Genus Callistocythere RUGGIERI, 1953

Callistocythere sp.
PI. 49, figs. 6a, b.

Description.-Description is based on
juvenile valves. Adult has not been foundyet.
Carapace subquadriangular, highest atanterior cardinal angle. Anterior marginsmooth, broadly and obliquely rounded.
Dorsal contact margin straight, partly
hidden by a swelling of posterodorsal surface, giving slightly concave posterodorsal
outline in lateral view. Posterior cardinalangle prominent. Ventral margin sinuate
near middle. Posterior marg"in gently
turning to broadly rounded posteroventral
margin. Color yellow.
Surface sculptured by small, irregular,
incomplete reticulations. Three swellingsin anterocentral, posterodorsal and posteroventral areas of carapace surface.
Three or four rows relatively large latices
along anterior margin. A prominent ridge
starting from eye region downward bordering anterior margin of dorsoanteriorsulcus. Dorsoanterior sulcus deep, running
downward along anterior margin of anterocentral swelling. Anterodorsal swelling
ornamented with four to five small reticulations. Two ventral rows of dorsomedian sulci just behind anterocentral
swelling. Posterodorsal and posteroventral

Michiko YAJIMA

394

swellings with reticulations. Posterior
marginal ridge arising from hinge margin,
making an arch convex posteriorly andending in posteroventral margin.
Eye tubercle obscure.
Normal pore
canals moderate in number, open in muri.
Radial pore canals simple. Marginal infold
narrow. Hinge desmodont of juvenilestage. Muscle scars not seen.
Dimensions.-Measurements of pooled
specimens are given below:
S

Loc

Me

OR

L

22 8

C

41 E

R

34 G

L

34 G

R

33 G

R

30 G

R

28 H

C

28 H

L·

29 H

L
H
L
H
W
L
H
L
H
L
H
L
H
L
H
L
H
W
L
H

0.47
0.26
0.40
0.23
0.17
0.52
0.29
0.48
0.27
0.48
0.27
0.39
0.22
0.31
0.19
0.34
0.20
0.16
0.52
0.30

Illustrated specimens.-UMUT -CA 8439,
a right valve (PI. 49, fig. 6a) UMUT-CA
8437, a left valve (PI. 49, fig. 6b).
Remarks.-Desmodont hingement andnarrow marginal infold suggest that the
specimens described herein all represent
juveniles. Unfortunately information on
the juvenile carapace of Japanese Callistocythere is very scarce. Characteristic
lateral outline, three prominent swellings,
and dorsoanterior and dorsocentral sulci
all suggest that this juvenile form belongs
to a species which has not yet been
described from Japan and its adjacentseas.
Occurrence.- This species occur very
rarely from the B, E, G and H members.
Family Hemicytheridae PURl, 1953
Subfamily Hemicytherinae PURl, 1953
Genus Ambostracon HAZEL, 1962

Ambostracon ikeyai n. sp.
PI. 49, figs. Sa-c. PI. 50, figs. 1, 2.
Text-fig. 7, figs. 2a, b.

Diagnosis.-A species tentatively assigned to the genus Ambostracon, characterized by elongate lateral view, and low
subcentral tubercle. Median and ventral
ridges are parallel and ventral ridge does
not project posterolaterally.
Description.-Carapace elongate subtrapezoidal in lateral outline, highest atanterior cardinal angle. Anterior margin
obliquely rounded with about 20 spines.
Dorsal and ventral margins straight, subparallel and slightly tapering toward posterior. Posterior margin truncated obliquely in dorsal half, and obliquely roundedwith 6 spines in ventral half. In dorsal
view, carapace oblong ovate, broadest at
subcentral tubercle.
Surface reticulate. A ridge along dorsal
margin running from eye tubercle to posterior cardinal angle, weak in anterior halfand strong in posterior half. From middleof dorsal ridge, a weak ridge branches
off running straight anteriorly. A ridge
arising from posterior cardinal angle running down dorsal one-fourth of posteriorheight and turning toward subcentral
tubercle. Ventral ridge parallel to ventral
margin arising from anteroventral corner
terminating in posterior one-fourth ofventral margin. Subcentral tubercle low
but prominent. From subcentral tubercle
about 15 weak ridges run radially toward694.

Quate1'nary Ostracoda from Kisarazu

marginal area. Among them, a prominent
median one runs from subcentral tubercle
longitudinally toward anterior area ofcarapace. These radial ridges and several
weak concentric ridges form rather regular
reticulations.
Eye tubercle large and prominent.
Normal pore canals, sieve type, moderate
in number, and evenly scattered. Poreopening with a large sunken sieve plate
and a large central opening. Radial pore
canals with bulbous enlargement and densealong anterior and posterior margins.
Marginal infold moderately broad. Selvage distinct. Inner margin parallel toouter margin. No vestibule.
Hinge holamphidont. Median bar of left
valve crenulate in posterior half. Anterior
tooth of right valve with slight trace of
crenulation. Muscle scar field in area ofsubcentral tubercle. Muscle scars consisting of two vertically arranged eliptic
frontal scars and four elongate adductor
muscle scars. Adductor scars arrangedside by side on the posterior wall ofsubcentral depression, median two devided.
Dimensions.-Measurements of specimens from Sample no. 2 of the E Member(Loc. 41).
S

Me

N

OR

C

L
H
W
L
H
L
H
L
H

2
2
2

0.54-0.55
0.30
0.23
0.57
0.33
0.57
0.28
0.42
0.23

L

R
L

(Adult-I)

Type specimens.-Holotype, UMUT-CA
8433, a complete carapace (PI. 49, fig. 5c);figured para types, UMUT-CA 8434, a left
valve (PI. 49, fig. 5b. PI. 50, figs. 1, 2. Textfig. 7, fig. 2a); UMUT-CA 8435, a rightvalve (PI. 49, fig.5a. Text-fig. 7, fig. 2b).

395

Type-locality.-Loc. 41 (Sample no. 2,
E Member).
Remarlls.- This species resembles both
Bradleya saitoi ISHIZAKI, 1963, from the
Miocene of the Yatsuo Formation of Ishikawa Prefecture and Urocythereis miii
ISHIZAKI. 1969, from Recent sediments ofNakanoumi, Shimane Prefecture in its outline and surface ornamentation. Actually,
however, no known genus can accomodate
this species. Since this species occurs
living in tide pools, study of the appendage
structure will be desirable before thedescription of a new genus.
Occurrence.-Several specimens wereobtained from the E, C, E, F, G and H
members.
Subfamily Thaerocytherinae HAZEl, 1967
Genus Cornucoquimba OHMERT, 1968

Cornllcoqllimba tosaensis (ISHlzAKI, 1968)
PI. 49, figs. 2a-c.

Text·fig. 8.

Hermanites tosaensis ISI-JIZAKI, 1968, p. 41, PI.

2, fig. 4, PI. 8, figs. 13, 14.
ISIIIZAKI, 1969, p. 222, PI. 26, fig.
19.
ISI-IIZAKI, 1971, p. 94, 95, PI. 4,
fig. 3.
Cornucoquimba tosaensis (ISIlIzAKI, 1968) : 1-1,\·
NAI et aI., 1977, p. 48.

-- --Diagnosis.-A species of the genus
Cornucoquimba characterized by a prominent subcentral tubercle, an oblique pos-

Text·fig. 8. 1\1 uscle scar pattern ofCornucoquimba tosaensis (ISI-IIZAKI, 1968),
left valve, CA 8441 ; Sample no. 60, Lac.
29, H Sar;d. x 180.

396

1l1ichiko Y AJIMA

terior transverse ridge, and a ventrolateralalate ridge.
Description.-Carapace subrectangular inlateral view. Anterior margin broadly
and obliquely rounded and with 20-25
small spines. Dorsal and ventral margins
straight. Ventral contact margin sinuate
at middle. Posterior margin subtriangular,
dorsal half concave, ventral half narrowly
rounded with six to eight large spines.
In dorsal view, anterior and posterior
areas compressed sides with two strong
projections owing to subcentral tubercle
and posterior part of ventrolateral ridge.
Surface reticulate with posterodorsal
and alate ventral ridges. Both ridges connected obliquely by a transverse ridge inthe posterior part of the carapace. Transverse ridge slightly concave toward posterior and with posterioriy directed threetubercles. Posterodorsal ridge runningalong dorsal margin, and culminating in ashort oblique ridge at the middle of dorsal
margin. Three ridges running more orless radially from subcentral tubercle
toward anterior part of carapace. One
connecting subcentral tubercle to eye
tubercle, one running longitudinally andone connecting subcentral tubercle toanterior part of ventral ridge. Subcentral
tubercle surrounded by reticulations between ridges. Anterior and posterior rims
distinct.
Eye tubercle round and distinct. Normal
pore canals sieve type with central opening, numerous, and evenly scattered.
Radial pore canals straight and dense, withbulbous enlargement.
Duplicature moderately broad. Selvage
distinct. Anterior vestibule narrow.
Hinge holamphidont with crenulate posteromedian element. Muscle scars in areaof subcentral tubercle. consisting of two
frontal scars and a vertical row of four
adductor muscle scars. Upper three adductor scars obliquely arranged on theposterior wall of subcentral depression
lower one on edge of depression in inside
view. Division of median two scars distinct.
Dimensions.-Measurements of specimens from Sample no. 60 of the H Sand
(Loc. 29).
5

Me

N

OR

R

L
H
L
H
L
H

1
1
1

0.67
0.35
0.67
0.36
0.65
0.35
0.33
0.54
0.30
0.54
0.30
0.43
0.24

L
C

1
1

VV
L

(Adult-I)

R(Adult-I)

R(Adult-2)

L
H
L
H
L

H

1
2
2
1

Illustrated specimens.-UMUT -CA 8440,
a right valve (PI. 49, fig. 2a); UMUT-CA
8441, a left valve (PI. 49, fig. 2b. Textfig. 8); UMUT-CA 8442, a complete carapace (PI. 49. fig. 2c).
Remarks.- This species was originallydescribed by ISHIZAKI (1968) based on the
Recent specimens from the bottom sediments of Uranouchi Bay, Kochi Prefecture.
In his treatment he only compared it with
Bradleya saitoi, by its dimensions, occurrence and figures. Since then no description has been made on this species, andit may therefore be of use to redescribe
the species in detail.
The muscle scar pattern of this species
is identical with that described by OHMERT(1968) for his genus Cornucoquimba. This
species is similar to Hermanites sp. described by HOLDEN, 1967 from Holoceneof the Hawaiian Islands, in outline as wellas general surface ornamentation. It ishighly possible that Hawaiian Hermanites
is conspecific with this species.

694.

Quaternary Ostracoda iro11t Kisarazu

Occurrence.- This species occurs commonly from the G Sand and the H Sand,
and rarely from the B Member and the
F Silt.

Subfamily Coquimbinae OHMERT, 1968
Genus Coquimba OHMERT, 1968

Coquimba ishizal?ii n. sp.
PI. 49, figs. 4a-c.

Text-fig. 7, figs. 3a, b.

"Hennanites" sp. A, [SHIZAKI, 1968, p. 41, PI.
6, fig. 13.
Coquimba sp. HA:'iAI, ISI-IlZAKI and IKEYA,
HA:'iAI et a!., 1977, p. 48.

Diagnosis.-A small species of the genus
Coquimba characterized by uneven surface,deep and narrow groove around verylarge subcentral tubercle, and absence oftubercles along posterior margin.
Description.-Carapace small, subquadrate in lateral view. Anterior margin
obliquely and broadly rounded with crenulations along anterodorsal margin. Dorsal
margin nearly straight. Ventral margin
concave at anterior one-third in lateralview. Ventral contact margin sinuate at
middle. Posterior margin truncated obliquely at posterior cardinal angle andnarrowly rounded in ventral half. In
dorsal view, carapace oblong ovate withposterior and compressed, and ovate inanterior and posterior views.
Surface uneven, anterior rim distinct
and high. Deep depression developing
narrowly along anterior rim. Subcentral
tubercle large. round and circumscribedby a narrow groove. Posterodorsal swelling small but distinct. Sinuate blunt ridge
arising from anteroventral area of carapace, running just below subcentral tubercle and terminating at posteroventral tubercle, having a large pit opening ventrally. Ridge strong in immature stage.

397

Eye tubercle obscure but eye depression distinct in inside view. Normal pore
canals sieve type, large, moderate in number and commonly scattered. Radial pore
canals straight, 10-15 along anteroventral
and 10-13 along posteroventral margins,often pairing off along anteroventral
margin.
Marginal infold narrow. Selvage distinct. Inner margin coincides with lineof concrescence. No vestibule. Hinge holamphidont with crenulate median element.
Muscle scar field in subcentral tubercle.
Muscle scars composed of two frontal
scars and four adductor muscle scars.
Upper frontal scar circular and lower
frontal scar stout, j-shaped. Adductor
scars arranged side by side obliquely. Bothdorsomedian and ventromedian scars divided into two distinct parts.
Dimensions.-Measurements of specimens from Sample no. 55 of the C Silt
(Loc. 18).
5

Me N

C

L
H

x

s

W
L

R

L
H
L
I-I

4
4

0.553
0.287

0.007
0.010

v

OR

0.56
0.29
0.30
1. 27 0.55-0.56
3.48 0.28-0.30
0.56
0.29

Types.-Holotype, UMUT-CA 8430, acomplete carapace (PI. 49, fig. 4c) ; figured
paratypes, UMUT-CA 8431, a left valve(PI 49. fig. 4b. Text-fig. 7, fig. 3a); UMUTCA 8432, a right valve (PI. 49, fig.4a. Textfig. 7, fig. 3b).
Type-locality.-Loc. 18 (Sample no. 55,
C Silt).
Remarks.- This species is similar toCoquimba Piscicula OHMERT, 1968, fromthe Pliocene of Chile, but the species isdistinguishable easily from C. piscicula by
the absence of tubercles along posteriorMichiko Y AJ!J\;fA

398

margin, the indistinct eye tubercle andthe presence of a large pit on the posteroventral ridge.
Occurrence.- The species commonly occurs in sand lenses of the C Silt. A few
specimens also occur in the B, E, F, G andH members.
Family Trachyleberididae
SYLVESTER-BRADLEY, 1948
Subfamily TrachyleberidinaeSYL VESTER-BRADLEY, 1948
Genus Trachyleberis BRADY, 1898

Trachyleberis sp.
PI. 49, figs. la, b.

Description.-Description is based on
juvenile valves. Adult has not been foundyet.
Carapace elongate subtrapezoidal andtapering toward posterior in lateral view.
Highest at anterior cardinal angle. Anterior margin broadly and evenly roundedwith denticulations along its ventral half.
Dorsal margin straight. Ventral margin
Posteriorslightly sinuate at middle.
margin truncated its dorsal half. Ventral
half of posterior margin denticulate. Denticulation thickest at posterior end. In
dorsal view, carapace oblong. Anteriorcardinal angle protrudent, having slightconcavity behind it. Posterior cardinalangle obtuse. Left valve overreachingright valve at anterior cardinal angle andin region of posterodorsal slope.
Surface coarsely reticulate, dominatedby an anterior marginal ridge and four
longitudinal ridges. Anterior marginal
ridge prominent, arising from area behindanterior cardinal angle, running parallelto anterior margin, and connecting tofourth longitudinal ridge. First longitudinal ridge starting from anterodorsal

area behind anterior marginal ridge running posterodorsally to dorsal margin andthen posteriorly along dorsal margin, andterminating before reaching posteriorcardinal angle. Median longitudinal ridge
arising from middle area just behindanterior marginal ridge, running obliquely
backward, and terminating at posterodorsal angle. Third longitudinal ridge
starting from lower part of anterior
margin, running parallel to second longitudinal ridge, and terminating in posteroventral area. Fourth and most ventral
ridge weak, running close and parallel tothird ridge. Weak, short ridges run parallel between the third and fourth ridges,
and the fourth ridge and ventral contact
margin. Regular reticulation between
longitudinal ridges. Fossae between anterior margin and anterior maginal ridges
large. Anterior and posterior rims low
and indistinct. Subcentral tubercle notprominent. Reticulation irregular in areaof subcentral tubercle.
Eye tubercle obscure in outside view
but eye depression clear in inside view.
Normal pore canals sieve type, sparsely
scattered. Radial pore canals numerous,
with bulbous enlargement and terminat5

N Me

Ji.

s

V

OR

L (Adult-I) 6 L 0.774 0.011 1.42 0.77-0.79
H 0.414 0.010 2.42 0.40-0.43
0.76
R (Adult-I) 1 L
0.40
H
0.71
L (Adult-2) 2 L
0.37
H
R (Adult-2) 6 L 0.714 0.008 1. 12 O. 7J.-0. 73
H 0.378 0.010 2.65 0.37-0.40
0.54-0.55
L (Adult-3) 2 L
0.31-0.32
H
R (Adult-3) 7 L 0.5650.0234.070.53-0.60
H 0.310 0.0144.52 0.30-0.33
0.43
R (Adult-4)
L
0.26
H
0.34
L (Adult-5)
L
0.20
H

694.

QuatM"nary Ostmcoda from Kisaraz1t

ing at each marginal denticulation.
Marginal infold narrow. Line of concrescence coincides with inner margin.
No vestibule.
Hinge modified merodont of juvenile
form. Muscle scars situated in subcentral
depression and composed of a v-shaped
frontal scar and vertical row of four horizontally elongated adductor muscle scars.
Dimensions.-Measurements of specimens from Sample no. 1 of the G Sand
(Loc. 37).
Illustrated specimens. - UM UT -CA 8422,
a left valve (PI. 49, fig. Ib); UMUT-CA
8423, a right valve (PI. 49, fig. la).
Remarks.-This form is closely similar
to the immature form of Trachyleberisniitsumai ISHIZAKI, 1971 (p. 93, PI. 4, fig.
15; not PI. 1, fig. 5, PI. 4, fig. 18, PI. 5,
fig. 3, PI. 6, fig. 10, PI. 7. fig. 9). It is interesting to note that this juvenile form
has some resemblance to the adult formof the genus Costa NEVIANI, 1928 (e. g.,
Costa sp. of SISSINGH, 1972, from late
Pliocene of Karpathos, South AegeanIslands, and Costa (Para costa) disintegra
SIDDIQUI, 1971 from Middle Eocene of
Pakistan).
Occurrence.-All ilustrated specimens
are obtained from the G Sand where they
are common. This species occurs fromthe F Silt and the H Sand but rarely.
Two specimens also obtained from the B
Member.
Genus Actinocythereis PURl, 1953

Actinocythereis kisarazuensis n. sp.
PI. 49, figs. 3a, b.

Text-fig. 9, fig. 1.

Diagnosis.-A species of the genus
Actinocythereis characterized by smoothsurface with spinous nodes often bifurcating at top. Ten to 15 small tubercles
arranged along anterior and posterior
margins.

399

2a

2b
Text-fig. 9. Internal views. a, left valve;b, right valve.
Fig. 1. Actinocythereis kisarazuensis YAJIMA, n. sp.
Holotype, left valve, CA 8420; Sample
no. 1, Loc. 37, G Sand. x 70.
Figs. 2a, b. Lixouria niPPollica Y AJIIVIA,
n. sp.
2a. Paratype, CA 8419; Sample no. 513,
Loc. 30, G Sand. x 90.
2b. Paratype, CA 8425; Sample no. 45,
Loc. 29, F Silt. x 90.

Description.-Carapace subtriangular inlateral view. Highest at anterior cardinalangle. Anterior margin broadly rounded.
Dorsal margin straight with five spinous
nodes in lateral view, anterior one on eye

Michiko YAJIMA

400

tubercle and posterior one at posteriorcardinal angle. Dorsal contact margin
straight. Ventral margin concave atanterior one-third in lateral view. Ventral
contact margin sinuate at middle. Dorsal
and ventral margins gently tapering posteriorly, dorsal half of posterior margin
slightly concave, ventral half of posterior
margin gradually continuing into ventral
margin, making obliquely rounded posteroventral margin. In ventral and dorsal
views, carapace elliptic, broadest posteriorly, with compressed anterior areas. In
anterior view, carapace ovate.
Surface with prominent spinous nodes.
Anterior rim armoured with seven small
tubercles, anterior area behind rim smooth,wide and shallow. Subcentral tubercle
prominent, high and covered by a verticalrow of three densely placed small nodes.
Short, faint ridges running from subcentral tubercle, one toward eye tubercle,
and spinous one toward anteroventral
area. Posteroventral rim armoured withnine small tubercles. Posterodorsal tubercle with three spinous nodes. Area of
posteroventral ridge marked by two spinous nodes. In immature stage, surface
reticulated.
Eye tubercle distinct. Normal pore
canals scattered. Radial pore canals withbulbous enlargement, numerous along anterior margin and coarser along posterior
margin.
Marginal infold moderately broad. Lineof concrescence coincides with inner
margin. Selvage distinct. No vestibule.
Hinge holamphidont, median bar denticulated. Muscle scar field in subcentral
tubercle. Muscle scar pattern not observable.
Dimensions.-Measurements of pooled
specimens are given below.
5

Lac

N

Me

L

28 G

2

L

OR
0.76-0.77

H
L

37 G

C

27 G

L

H
L

H
C

37 G

W
L

H
L

(Adult-I)

28 G

W
L

L

(Adult-I)

36 G

L

L

(Adult-I)

35 G

H
H
2

L

H
R

(Adult-I)

35 G

L

H

0.45-0.46
0.83
0.45
O. 79
0.45
0.20
0.77
0.44
0.19
0.65
0.37
0.67
0.33
0.67-0.68
0.37--0.38
0.51
0.31

Types.-Holotype UMUT-CA 8420, a left
valve (PI. 49, fig. 3b. Text-fig. 9, fig. 1);
figured paratype UMUT-CA 8421, a rightvalve (PI. 49, fig. 3a).
Type-locality.-Loc. 37 (Sample no. 1. G
Sand).
Remarfls.-This species is closely similar
to Trachyleberis sp. A, described by ISHIZAKI, 1968 from Uranouchi Bay, Kochi
Prefecture. In fact, it is highly probablethat both species is conspecific. The
species is actually close to the genus
Actinocythereis in having at least two horizontal rows of spinous nodes.
Occllrrence.- This species occurs only
from the G Sand, 12 specimens in total
are obtained.
Subfamily Pterygocythereidinae
PURl, 1957

Genus Lixouria ULlCZNY, 1969

Lixouria nipponica n. sp.
PI. 50, figs. 7a·c. Text-fig. 9, figs. 2a, b.

Diagllosis.-A species of the genus
Lixouria characterized by development ofalae with keel running smoothly from

694. Q'uaternary Ostracoda from Kisarazttanterior margin to posterior margin.
Description.-Carapace subtrapezoidal, inflated ventrally in lateral view. Anterior
margin obliquely rounded, with 10-13
spines along anteroventral margin. Dorsal
contact margin straight but dorsal margin
slightly sinuate in lateral view. Anterior
and posterior cardinal angles obtuse. Ventral margin convex in lateral view andnearly parallel to dorsal margin. Ventral
contact margin sinuate at anterior onethird. Posterior margin narrowly andobliquely rounded and truncated obliquely.
Posterior extremity with blunt spines,
lowest is the largest. Ventrolateral alae
strong and with keel running smoothly
from anterior margin to posterior margin
without interuption by spines. Surface
smooth. Carapace ovate in dorsal view,widest in posterior one-third. In anteriorview, carapace isosceles triangular, withslightly inflated sides and nearly straightbase.
Normal pore canals simple and numerous.
Radial pore canals straight, moderate innumber. Some along the anterodorsal
margin bifurcate. Eye tubercle obscurebut depression for eye in front of anterior
tooth distinct in ·inner view.
Marginal infold narrow along anterior
and posterior margins. Left valve overhanging along dorsal margin. Inner margin
coincides with line of concrescence along
anterior and posterior margins except foranteroventral and posteroventral margins,
where vestibule developed rather deeply.
Hinge holamphidont with crenulate medianelement. Anterior socket of right valve
small.
Muscle scar field flattened. Muscle scars
consisting of a j-shaped frontal scar anda vertical row of four oval adductor
scars, of which median two elongate.
Dimensions.-Measurements of pooled
specimens are given below.

S

Loc

C

29 F

R

29 F

L

28 G

C (Adult-I)

28 G

C

29 G

C

30 G

C

29 H

401
N

1

1

1

Me

OR

L
H
W
L
H
L
H
L
H
W
L
H
W
L
H
W
L
H
W

0.72
0.43
0.42
0.67
0.36
0.70
0.39
0.56
0.29
0.32
0.70
0.41
0.42
0.70
0.41
0.38
0.73
0.41
0.38

Types.-Holotype UMUT-CA 8424, acomplete carapace (PI. 50, fig. 7c) ; figured
paratypes, UMUT-CA 8425, a right valve(PI. 50, fig.7a. Text-fig. 9, fig. 2b) ; UMUTCA 8419, a left valve (PI. 50, fig.7b. Textfig. 9, fig. 2a).
Type-locality.-Loc. 29 (Sample no. 45,
F Silt).
Remarks.-This species resembles Lixouria aquila RUGGIERI, 1972 from Plioceneof Italy, but differs in the shape of thealae and vestibule. It is also closely allied
to Incongruellina (Lixouria) unicostulata
ULICZNY, 1969 from the Pliocene of western Greece, but in the new species, thekeeled edge of alae runs continuously
from anterior margin to posterior margin.
Occurrence.- This species occurs rarelyin the E, F, G and H members.
Subfamily Buntoniinae
ApOSTOLESQU, 1961
Genus Buntonia HOWE, 1935

Buntonia hanaii n. sp.

Michiko Y AJIMA

402
PI. 50, figs. 4a, b.

Buntonia sp. HAl\:AI, 1961, p.373, text·fig. 14,

figs. la, b.
- - sp.: HA:\AI et aI., 1977, p. 53.

Diagnosis.-A species of the genus
Buntonia characterized by reticulation restricted to posterior one-third of carapace.
Reticulation consisting of a few strong
ridges running nearly parallel to posterior
margin and a few cross ridges tending toconverge posteriorly.
Descriptioll.-Carapace oblong ovate inlateral view. highest at middle i. e. atanterior cardinal angle. Anterior margin
broadly rounded and bordering by strongly
developed marginal rim. Both dorsal andventral margins slightly convex, nearlyparallel each other in right valve andgradually tapering posteriorly in left valve.
Ventral contact margin sinuate at middle.
Posterior margin truncated at posterior
end. Posterior cardinal angle protruding
in left valve. Carapace elliptic and compressed in dorsal view, and elliptic inanterior view. Left valve larger thanright.
Posterior half of carapace surface witha few strong ridges being nearly parallel
to posterior margin. Ridges connected bycross ridges tending to converge posteriorly. Surface otherwise smooth.
Normal pore canals simple, moderate
in number, scattered over entire surface
and in a line along anterior marginal rim.
Radial pore canals numerous, straight,
and with bulbous enlargement. Somebundled up and some bifurcate.
Valves shallow. Marginal infold broad
along anterior margin and narrow alongposterior margin. Vestibule narrow. otherwise line of concrescence coincides with
inner margin.
Hinge holamphidont, with crenulated
median element, and short. Anterior toothof right valve situated in middle of cara-

pace length. Muscle scar field subcentral.
Muscle scars consisting of a j-shaped
frontal scar and a vertical row of four
adductor muscle scars. Dorsal one ofadductor muscle scars crescent, mediantwo elongate, and ventral one ovate. A
large additional scar occuring in dorsal
area.
Dimensions.-Measurements of specimens from Sample no. 60 of the H Sand
(Loc. 29).
S

Me N

L

L
H
L
H
L
H

R
C

W
L (Adult-I)

R (Adult-I)
L ( Adult-2)

L
H
L
H
L
H

3
3
2
2
3
3
3

X

OR

0.610
0.373

0.59-0.63
0.34-0.39
0.58-0.59
0.33-0.36
0.59-0.62
0.34-0.37
0.24-0.29
0.51
0.29
0.50
0.28
0.41
0.22

0.600
0.350
0.267

Types.-Holotype, UMUT-CA 8427, aleft valve (PI. 50, fig. 4b) ; figured para type,
UMUT-CA 8428, a right valve (PI. 50, fig.
4a).
Type-locality.-Loc. 29 (Sample no. 60,
H Sand).
Remarks.-This species is very similar
to Buntonia sp. of VALENTINE, 1976, fromthe Holocene shelf deposits of Santa
Monica Bay, the west coast of the UnitedStates, in lateral view, but different inposterior ornamentation. For the distribution pattern of radial pore canals anddetails of the hingement of B. hanaii n. sp.
see illustrations made by HANAI (1959b).
Occurrence.-All type specimens wereobtained from the H Sand where they areabundant. This species occurs commonlyfrom the B, F and G members.

694.

Quate1'nary Ostracoda from Kisa1'azu

10

403

lb

20
2b
Text-fig. 10. Internal views. a, left valve; b, right valve.
Figs. la, b. Cytheroma? hanaii YAJI~'IA, n. sp.
Holotype, CA 8413; Sample no. 35, Loc. 33, G Sand. x 85.
Figs. 2a, b. Paracytheridea bosoensis YAJI~'IA, n. sp.
2a. Paratype, CA 8416; Sample no. 55, Loc. 18, C Silt. x 80.
2b. Holotype, CA 8415; Sample no. 55, Loc. 18, C Silt. x 90.

Family Cytheruridae G. W. MULLER, 1894
Subfamily Cytherurinae
G. W. MULLER, 1894,
Tribe Paracytheridini PURl, 1957
Genus Paracytheridea G. W. MULLER, 1894
Paracytheridea bosoensis n. sp.
PI. 50, figs. 6a, b.

Text-fig. 10, figs. 2a, b.

Diagnosis.-A species of the genus
Paracytheridea characterized by a prominent swelling of shoulder part of winglike expansion and faintly reticulate surface.
Description.-Carapace subtrapezoidal inlateral view. Anterior margin obliquelyrounded. Dorsal margin nearly straight.
Ventral margin obscured by wing-likelateral expansion of carapace. Ventral
contact margin slightly sinuate near
middle. Posterior margin tapering rapidly

to form pointed extremity. In dorsal
view, carapace broadly ovate. In anteriorview, carapace triangular, with inflated
lateral and relatively fiat ventral surfaces.
Surface irregularly and broadly reticulated by thin and low ridges. Two
faint marginal ridges running parallel toanterior, ventral and posterior margins.
Wing-like lateral expansion prominent.
Subcentral swelling of muscle scar field
low but distinct. Trace of muscle scars
prominent on outer surface.
Eye tubercle obscure. Normal pore
canals, sieve type, with large sunken poreplate and a large central opening, moderate in number, and scattered evenly.
Radial pore canals straight, approximately
ten in number along anterior margin.
Marginal infold narrow. Selvage andflange distinct. Vestibule very narrow or
obscure. Hinge merodont, straight type
CHANAl, 1957c).
Muscle scar consisting of two frontal
scars, upper one large and lower one

Michiko YAJIMA

404

small, and a vertical row of four adductor
muscle scars, dorsomedian one divided.
Dimensions.-Measurements of specimens from Sample no. 55 of the C Silt
(Loc. 18).

OR

S

Me

N

L

L
H
L
H

0.61
0.33
6 0.620 0.015 2.40 0.60--0.64
6 0.317 0.009 2.80 0.30-0.32

R

X

V

Types.-Holotype, UMUT-CA 8415, aright valve (PI. 50, fig. 6a. Text-fig. 10,
fig. 2b); figured paratype, UMUT-CA 8416,
a left valve (PI. 50, fig. 6b. Text-fig. 10,
fig. 2a).
Type-locality.-Loc. 18 (Sample no. 55,
C Silt).
Remarks.- This species is similar to
Paracytheridea neolongicaudata ISHIZAKI,
1966, from the Hatatate Formation (Late
Miocene), but differs in the shape of alae.
Occurrence.-This species is abundant in
the C Silt, commonly from the G Sand,
and rarely from the E and H members.
Family Paradoxostomatidae BRADY
and NORMAN, 1889
Subfamily Cytheromatinae ELOFSON, 1939
Genus Cytheroma G. W. MULLER, 1894

Cytheroma? hanaii n. sp.
PI. 50, figs. 5a, b.
Text·fig. 10, figs. la, b.

Diagnosis.-A species of the genus
Cytheroma? characterized by an anterior
large anti-slip tooth in right valve.
Description.-Carapace ovate in lateral
Anterior margin obliquely andview.
broadly rounded. Dorsal margin slightly<:onvex. Ventral margin nearly straight,
ventral contact margin slightly sinuate ,atmiddle. Posterior margin narrowly round-

ed. In dorsal view, carapace tumid.
Carapace thin and somewhat pelucid.
Surface smooth. Eye tubercle obscure.
Normal pore canals, open type, moderate
in number, scattered evenly. Radial pore
canals, approximately 30 in number along
entire margin, and dense along anteroventral margin. Some of them bifurcate,particularly along anterior and posterior
margins.
Marginal infold very wide anteriorly
and posteroventrally, narrow ventrally andposterodorsally. Inner margin not parallel to outer margin, curved gently along
anterior margin and making straighteneds-shaped along posteroventral margin.
Vestibule deep along anterior margin andshallow along posteroventral margin.
Hingement lophodont. Hinge margin ofleft valve provided with an anterior small
socket, a smooth long bar with smallround projections at each end. and ashallow posterior socket. Hinge marginof right valve composed of corresponding
elements to those of left valve, withsocket-like end of groove. A large roundanti-slip tooth projecting below anterior
socket-like end of groove.
Muscle scars in anteromedian area andcomposed of a large round frontal scar
and a vertical row of four adductor
muscle scars, in which the median two
are elongate.
Dimensions.-Measurements of specimens from Sample no. 35 of the G Sand
(Loc. 33).

S

Me

N

X

OR

C

L
H
W
L
H
L
H

3
3
3
1
1
2
2

0.547
0.268
0.143

0.54-0.55
0.265-0.27
0.14-0.15
0.49
0.24
0.49
0.24

L

R

694.

Quaternary Ostracoda }1'om ](isaraz~~

Types.-Holotype. Ul'vIUT-CA 8413, acomplete carapace (PI. 50, figs. Sa, b. Textfig. 10, figs. la, b).
Type-locality.-Loc. 33 (Sample no. 35,
G Sand).
Remarks.-This species is close toCytheroma variabilis G. W. MULLER, 1894
illustrated by UFFENORDE (1975) from the
Adriatic Sea, but is different in the lateraloutline. A large round anti-slip tooth in
the anterior part of right valve hingement characterizes this species. The
writer is inclined to assign considerable
taxonomic value to this anti-slip tooth.
Since anti-slip tooth has not been foundin the species of the genus Cytheroma yet,the writer tentatively places this species
in the genus Cytheroma with question.
Occurrence.- This species occurs rarelyin the B Member, the F Silt, the G Sand,
and the H Sand.
Acknowledgements

The author expresses her sincere gratitude to Dr. J. E. HAZEL and to Dr. T. M.
CRONIN of the U. S. Geological Survey,
Washington, D. C., U. S. A., who read theoriginal manuscript and gave her invaluable advice.
This study has been made under the
direction of Professor Tetsuro HANAI of
the University of Tokyo. The author ismuch indebted to him for advice andencouragements which stimulated thepresent work. Gratitude is also expressedto Associate Professors Kiyotaka CHINZEI
and Itaru HAYAMI of the University ofTokyo, Noriyuki IKEYA of the Shizuoka
University and Drs. Tomowo OZAWA,
Toshiyuki YAMAGUCHI and Hiroshi KITAZATO of the University of Tokyo, fortheir instructions during laboratory andfield works.

405

Sampling localities
l. An exposure, 500 m E. of the Hitomi
Shrine, Hitomi, Kimitsu-shi.
2. An exposure, 250 m E. of the Hitomi
Shrine, Hitomi, Kimitsu-shi.
3. An exposure in the precincts of the Hitomi Shrine, Hitomi, Kimitsu-shi.
4. A cliff fronting the Koito River, 150 m NW.
of the Hitomi Shrine, Hitomi, Kimitsu-shi(Loc. 87 of KOZI?vIA, 1966a, b).
5. An exposure, 50 m N. of the Kimitsu storing reservoir, Godo, Kimitsu-shi (Loc. 86
of KOZI~L", 1966a, b).
6. An exposure, 100 m SSE. of the Godo busstop, Godo, Kimitsu-shi.
7. An exposure, 100 m ESE. of the Godo busstop, Godo, Kimitsu-shi (Exposures at Locs ..
5, 6 and 7 are found to be continuous).
8. An exposure at the flank of a hill on
which the Gymnasium of the Shin-Nittetsu
Co. Ltd_ stands, Owada, Kimitsu-shi.
9. An exposure of road cutting situated in
the western side of the Owada junction,
Owada, Kimitsu-shi (Loc. 85 of KOZlivIA,
1966a, b).
10 _ A cliff situated in the eastern side of the
Owada junction, Sakata, Kimitsu-shi.
11. An exposure, 100 m SSE. of the Owada
Bridge, Owada, Kimitsu-shi (Loc. 88 of
KOZI~IA, 1966a, b).
12. A cliff along the highway route 16, about
300 m N. of the Owada Elementary School,
Sakata, Kimitsu-shi.
13. An exposure behind the bus-stop at theentrance of the Shin-Nittetsu Co. Ltd.,
Sakata, Kimitsu-shi.
14. A cliff at the flank of a hill on which theShin-Nittetsu Club stands, 200 m N. of the
Sakata ;Elementary School, Sakata, Kimitsu-shi (Loc. 84 of KOZlivIA, 1966a, b).
15. An exposure, 300 m S. of the Sakata busstop, Honnawa, Sakata, Kimitsu-shi.
16. A cliff, 100 m WNW. of the Osekiya Pond,
Honnawa, Sakata, Kimitsu-shi.
17. An exposure along the highway route 16,
150 m WSW. of the Hatazawa Bridge, Sakata, Kimitsu-shi (Loc. 82 of KOZIMA,
1966a, b).
18. An exposure, 200 m NNE. of the Sengen

406

Michiko Y AJIMA

Shrine, Hatazawa, Kisarazu-shi (Loc. 81
of KOZIMA, 1966a, b).
19. An exposure along the highway route 16,
400 m SW. of the Obama bus-stop, Obama,
Kisarazu-shi (Loc. 80 of Kozn'IA, 1966a, b).
20. An exposure, 200 m E. of the Obama busstop, Obama, Kisarazu-shi.
21. An exposure, 350 m NNE. of the Kimitsu
Station, Sakata, Kimitsu-shi.
22. An exposure, 600 m E. of the Kimitsu Station, Kuboyama, Kubo, Kimitsu-shi.
23. A cliff, 1 Km ESE. of the Kimitsu Station,
Kuboyama, Kubo, Kimitsu-shi.
24. A cliff, 600 m NNE. of the Kuzoin Temple,
Kita-Koyasu, Kimitsu-shi.
25. A cliff, 350 m'NNW. of the Namioka Elementary School, Katsudoyatsu, Okubo,
Kisarazu-shi.
26. A cliff, 500 m SSW. of the Sakurai Post
Office, Sakurai, Kisarazu-shi (Loc. 78 of
KOZIMA, 1966a, band Loc. 1 of KIKUC~I1,
1972b).

27. A cliff, 400 m K. of the Nozoin Temple,
Sakurai, Kisarazu-shi (Loc. A of KIKUCHI,
1972b) .
28. A cliff, 300 m ESE. of the Shofukuji Temple, Josai, Kisarazu-shi.
29. An exposure, 300 m SW. of the Shounji
Temple, Senzoku, Josai, Kisarazu-shi.
30. An exposure, 300 m S. of the Kisarazu
Second Junior High School, Takabe, Josai,
Kisarazu-shi.
31. An exposure, 300 m SSE. of the Kisarabu
Second Junior High School, Bouchiyatsu,
Josai, Kisarazu-shi.
32. An exposure, 600 m S. of the Hie Shrine,
Josai, Kisarazu-shi.
33. An exposure, 450 m S. of the old Hirakawa Bridge, Nakagoyatsu, Josai, Kisarazushi.
34. An exposure, 150 m SW. of the Chiba.Prefectural 'Kazusa Museum, Ota, Kisarazu-shi (Loc. 68 of KOZIMA, 1966a, b).
35. A cliff, 100 m S. of the Chiba Prefectural

Explanation of Plate 49
Figs. la, b. Trachyleberis sp.
la. Lateral view, young instar, right valve (CA 8423; Sample no. 1, Loc. 37, G Sand). x 60.
lb. Lateral view, young instar, left valve (CA 8422; Sample no. 1, Loc. 37, G Sand). x 60.
Figs. 2a -c. Cornucoquimba tosaensis (ISHIZAKI, 1968).
2a. Lateral view, adult right valve (CA 8440; Sample no. 60. Loc. 29, H Sand). x 70.
2b. Lateral view, adult left valve (CA 8141; Sample no. 60, Loc. 29, H Sand). x 70.
2c. Dorsal view, adult complete carapace (CA 8442; Sample no. 60, Loc. 29, H Sand). x 60.
Figs. 3a, b., Actinocythereis kisarazuellsis YAJI~'(A, n, sp.
3a. Lateral view, adult right valve (Paratype, CA 8421; Sample no. 1, Loc. 37, G Sand).x90.
3b. Lateral view, adult left valve (Holotype, CA 8420; Sample no. 1, Loc. 37, G Sand). x 90.
Figs. 4a-c. Coquimba ishizakii YAJIMA, n. sp.
4a. Lateral view, adult ,right val ve ,(Paratype, CA 8432; Sample no. 55, Loc. 18, C Silt) . x 90.
4b. Lateral viEOw, adult left valve (paratype, CA 8431; Sample no. 55, Loc. 18, C Silt). x 90.
4c. Dorsal view, adult complete carapace (Holotype, CA 8430; Sample no. 55, Loc. 18, CSilt). x 90.
Figs. 5a-c. Ambostracoll ikeyai YAJ(~(A, n. sp.
5a. Lateral view, adult right valve (Paratype, CA 8435; Sample no. 2, Lac. 41, E Member).
x90.
5b. Lateral view, adult left valve (Paratype, CA 8434; Sample no. 2, Lac. 41, E Member).
x90.
5c. Dorsal view, adult complete carapace (Holotype, CA 8433; Sample no. 2, Lac, 41, E Member). x 90.
Figs. 6a, b., Callistocythere sp.
6a. Lateral view, young instar, right valve (CA 8439; Sample no. 35, Lac. 33, G Sand). x 110.
6b. Lateral view, young instar, left valve (CA 8437; Sample no. 35, Loc. 33, G Sand). x 110.

Y AJIMA:

Quaternary Ostracoda

Plate 49

694.

Q1wte1"nary Ostmcoda from Kisarazu

Kazusa Museum, Ota, Kisarazu·shi (Loc.
69 of KOZIMA, 1966a, b).
36. An exposure, 200 m NNW. of the new Ota
Bridge, Ota, Kisarazu·shi (Loc. 70 of Ko·
ZI~'IA, 1966a, b).
37. An exposure, 300 m NNE. of the Chiba
Prefectural Kazusa Museum, Ota, Kisara·
zu·shi.
38. An exposure, 1 Km S. of the Kazusa·
Kiyokawa Station, Nakao, Kisarazu·shi.
39. An exposure, 1 Km SSE. of the Kazusa·
Kiyokawa Station, Nakao, Kisarazu·shi.
40. A cliff, 600 m SW. of the Kazusa·Kiyoka·
wa Station, Sugo, Kisarazu·shi.
41. A cliff, 700 m W. of the Kazusa·Kiyokawa
Station, Nakao, Kisarazu·shi (Loc. 5 of
KIKUCHI, 1972b).
42. A cliff, 500 m ESE. of the Kazusa-Kiyokawa Station, Nakao, Kisarazu·shi (Loc.
9 of KIKUCHI, 1972b).

References
AOKI, N., HORIGUCHI, 0., YAMASIIITA, F., andKAMI)O, H. (1968): Pleistocene deposits
in the environs of Kisarazu and Anegaaki, Boso Peninsula.
Jour. Ceol. Soc.
Japan, vol. 74, no. 6, p.319-325. (in Japanese)- - and BABA, K. (1973): Compilation of thestratigraphy and molluscan fossil assem·
blages of the Pleistocene Shimosa Group,
eastern part of Kwanto Plain, central
Japan. jour. Ceol. Soc. japan, vol. 79, no.
7, p. 453-464. (in Japanese)
CIIINZEI, K. (1971): Ecological and paleoecological nO,tes on oyster beds. Benthos
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HANAI, T. (1957a): Studies on the Ostracoda
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sec. 2, vol. 10, pt. 3, p. 431-468, pIs. 7-10.
- - (1957b): Studies on the Ostracoda fromJapan, II, Subfamily Pectocytherinae n.
subfam. jour. Fac. Sci. Univ. Tokyo, sec.
2, vol. 10, pt. 3, p. 469-482, pI. 11.
- - (1957c): Studies on the Ostracoda fromJapan, III, Subfamilies Cytherurinae G. W.
MULLER (emend.G. O. SARS, 1925) andCytheropterinae n. subfam. jour. Fac. Sci.

407

Univ. Tokyo, sec. 2, vol. 11, pt. 1, p. 1136, pIs. 2-4.
- - (1959a): Studies on the Ostracoda fromJapan, IV, Family Cytherideidae Sars,
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2, vol. 11, pt. 3, p. 291-308, pIs. 16-18.
- - (1959b): Studies on the Ostracoda fromJapan, V, Subfamily Cytherinae DA2'lA,
1852 (emend.). jour. Fac. Sci. Univ.
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- - (1961a): Studies on the Ostracoda fromJapan. Hingement. jour. Fac. Sci. Univ.
Tokyo, sec. 2, vol. 13, pt. 2, p. 345-377.
- - (1961b): Spinileberis, a new genus of
Ostracoda from the Pacific. Trans. Proc.
Palaeont. Soc. japan, n. s., no. 44, p. 167170.
- - , IKEYA, N., IsIIlZAKI, K., SEKIGCCHI, Y.,
and YAJEvIA, M. (1977): Checklist of theOstracoda in Japan and its adjacent seas.
Univ. Mus. Univ. Tokyo, Bull., no. 12, 120
pp., 4 pIs.
HAZEL, J .E. (1962): Two new hemicytherid
ostracods from the lower Pleistocene of
California. jour. Paleont., vol. 36, no. 4,
p. 822-826.
HOLDE);, J. C. (1967): Late Cenozoic ostracodes from the drowned terraces in the
Hawaiian Islands. Pacific Sci., vol. 21,
no. 1, p. 1-50.
ISHlzAKI, K. (1966): Miocene and Pliocene
ostracodes from the Sendai area, Japan.
Tohoku Univ., Sci. Rep. 2 nd ser. (Geol.),
vol. 37, no. 2, p. 131-163; pIs. 16-19.
- - (1968): Ostracodes from Uranouchi Bay,
Kochi Prefecture, Japan.
Tohoku Univ.,
Sci. Rep., 2nd ser. (Geol.), vol. 40, no. 1,
p. 1-45, pIs. 1-9.
- - (1969): Ostracodes from Shinjiko andNakanoumi, Shimane Prefecture, western
Honshu, Japan. Tohoku Univ., Sci. Rep.,
2nd ser. (Geol.), vol. 41, no. 2, p. 197224, pIs. 24-26.
~- (1971): Ostracodes from Aomori Bay,
Aomori Prefecture, northeast Honshu,
Japan. Tohoku Univ., Sci. Rep., 2nd ser.
(Geol.), vol. 43, no. 1, p. 59-97, pIs. 1-7.
- - and KATO, M. (1976): The basin development of the Diluvium Furuya Mud

408

Michiko YAJIMA

basin, Shizuoka Prefecture, Japan, basedon faunal analysis of fossil ostracodes.
Progress in Micropaleontology, p. 118-143,
pIs. 1-4.
KIKUCHI, T. (1972a): A characteristic trace
fossil in the Narita Fromation and its
paleogeographical significance. Jour.Ceol.
Soc. Japan, vol. 78, no. 3, p. 137-144. (inJapanese)- - (1972b): Some issues on stratigraphyof the Shimosa Group, Boso Peninsula.
Jour. Ceol. Soc. Japan, vol. 78, no. 11, p.
611-623. (in Japanese)
KOZIMA, N. (1966a): Geological structure of
the southeast coast of Tokyo Bay, Japan.
Studies on the Narita Group (6). Jour.
Ceol. Soc. Japan, vol. 72, no. 4, p. 205212. (in Japanese)- - (1966b): On the fossil shells in the Narita Gruop along the southeast coast ofTokyo Bay, Japan. Studies on the Narita
Group (7). Jour. Ceol. Soc. Japan, vol.
72, no. 12, p. 573-584. (in Japanese)
OHMERT, W. von (1968): Die Coquimbinae,
eine neue Unterfamilie der Hemicytheridae (Ostracoda) aus dem Pliozan vonChile. Mitt. Bayer. Staatssaml. PalCionl.
hist. Ceol., vol. 8, p. 127-165.
OHSHlMA, K. (1967): Some burrowing crustaceans and shape of their burrows fromthe Usu Bay, Hokkaido. Jubilee Publ.
Commem. Prof. Sasa, 60th Birthday, p.
241-265.
OYAMA, K. (1967): Paleontological problemsof the coastal waters. Jubilee Publ. Commem. Prof. Sasa, 60th Birthday, p. 267-

Explanation of Plate 50
Figs. 1, 2, Ambostracan ikeyai YAJIMA, n. sp.
1. Adductor muscle scars of right valve (Paratype, CA 8435; Sample no. 2, Loc. 41, E Member). x 330.
2. Normal pore canal opening on exterior surface, located close to the subcentral tubercleof left valve (Paratype, CA 8434; Sample no. 2, Loc. 41, E Member). x 6000.
Figs. 3a, b. Pseudopsammocylhere tokyoensis YAJIMA, n. sp.
3a. Lateral view, adult right valve (Holotype, CA 8410; Sample no. 512, Loc. 28, H Sand).
x 100.
3b. Lateral view, adult left valve (Paratype, CA 8411; Sample no. 512, Loc. 28, H Sand).
x 100.
Figs. 4a, b. Buntonia hanaii YAJIyIA, n. sp.
4a. Lateral view, adult right valve (Paratype, CA 8428; Sample no. 60, Loc. 29, H Sand).
x75.
4b. Lateral view, adult left valve (Holotype, CA 8427; Sample no. 60, Loc. 29, H Sand).
x75.
Figs. 5a, b. Cytheroma? hanaii YAJI~IA, n. sp.
5a. Lateral view, adult right valve (Holotype, CA 8413; Sample no. 35, Loc. 33, G Sand).
x 100.
5b. Lateral view, adult left valve (Holotype, CA 8413; Sample no. 35, Loc. 33, G Sand).
x 100.
Figs. 6a, b. Paracytheridea bosoensisa YAJI~IA, n. sp.
6a. Lateral view, adult right valve (Holotype, CA 8415; Sample no. 55, Loc: 18, C Silt).
x90.
6b. Lateral view, adult left valve (Paratype, CA 8416; Sample no. 55, Loc. 18, C Silt). x 90.
Figs. 7a-c. Lixouria nipponica YAJI~IA, n. sp.
7a. Lateral view, adult right valve (Paratype, CA 8425; Sample no. 45, Loc. 29, F Silt). x 70.
7b. Lateral view, adult left valve (Paratype, CA 8419; Sample no. 513, Loc. 30, G Sand).
x70,
7c. Dorsal view, adult complete carapace (Holotype, CA 8424; Sample no. 45, Loc. 29, FSilt). x70.

vpo~v.(/JSO

n.wu.UJ 7vn tJ : V W J[v A

694. Quaternary Ostracoda from Kisarazu
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vol. 113, no. 1, p. 89-113.
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from west Pakistan. Bull. Brit. Mus.
(Nat. Hist.) Ceol., suppl. 9,98 pp., 42 pis.
SISSINGH, W. (1972): Late Cenozoic Ostracoda of the South Aegean Island Arc.
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search for the past-All of the dating
methods.) 234 pp. Kodansha. (in Japanese)
UFFENORDE, H. (1975): Dynamics in Recent
marine benthonic ostracod assemblages inthe Limski Khnal (northern Adriatic Sea).
In F. M. SWAIN (ed.) Biology and Paleobiology of Ostracoda, Bull. Amer. Paleont.
vol. 65, p. 147-166.
ULlCZl'\Y, F. (1969): Hemicytheridae undTrachyleberididae (Ostracoda) aus dem
Pliozan der Insel Kephallinia (Westgriechen land) . Inaugural-Dissertation Munchen, 152 pp., 18 pis.
VALENTI';E, P. c. (1976): Zoogeography of
Holocene Ostracoda off western North
America and paleoclimatic implications.
U. S. Ceol. Survey, Prof. Paper, 916, 47 pp.,14 pis.
YAI3E, H. (1914): Boso Peninsula. Cendai no
Kagaku (Modern Science), vol. 2, no. 4,
p. 227-234. (in Japanese)
YAJnIA, M. (1977): Quaternary Ostracoda
from Kisarazu near Tokyo. 84 pp., 4 pls_
(Master Thesis)m.~~.~~hl*. *~~~ill~.~.~~~M~~_W~~~~~~D • • ~~M~;';>1:' ~ ~ t-:/lb,"i fJrtM-c'~:'6'ffi, Iil'iFtI*li*, Jl. fl::5 c li'J;~~ _:l*~~1il!.~~:';§!;\' '-(J!i"~Jj[<I)

IJl5C~~7,..t-:o ~Jt!!..IU:!:, 2 "')~~bl1~ftiiJJl!!;';;~l./lb ~n~o Tb11~~JJl!! (B-E) i:'fHl[i~~~~Jl.

fl::5;,;;, .l.{fll (F-H) i:'f:!:.~ji/~~~Jl.fl::5;';;~ <_W~ ~o -Fm)~JJl!!.l.-flfl~ D~~ c {fl5r~~r{flll:!:., ftj[[~loJ~ T Iv jl ~;i~jlr.{fll ~ L \, '0 .l.{flI~JJl!!~ Gli'J;I\"i':!:.f~,~r*tr dti~JtIII:.ffi~~ ~ 0
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J! ~n, 7Jei* 20~50 m ~:/' It.- r '1tli'J;Jfr.i:'1:,I!!,~ ~ :fi~ftll):.j*iIil~ ~ "i ~'i t.dj;~Jj[ ~ IJ iJfEA. L%hI:i/lb~o iii)

t-::fi~~7,.., ~~i'iD.-c·£>~o409

C :/'Iv r@~D.I:!:. Paracytheridea bosoensis ~:±'{;$:c~
Loxoconcha laeta ~:±'{;$:c~~,~-C~~;';:~/lb~n~~~:.ML, Gli'J;~, Hffll?o!1~'i:.~':!:.,~o8 ~fm Pseudopsammocythere tokyoensis, Ambostracon ikeyai, Coquimba ishizakii,
Actinocythereis kisarazuensis, Lixouria nipponica, Buntonia hanaii, Paracytheridea
bosoensis, Cytheroma? hanaii ~lt~~ L, 1:fi (Cornucoquimba tosaensis. (lSIlIZAKI, 1968»~-llJli~~ L t-:o Pseudopsammocythere, Ambostracon, Lixouria ~ 3 J&.~ _WI:!:. B ;$:;';> ~I:!:.
J\3tm~~~1!r-c £> ~ 0

Trans. Proc. Palaeont. Soc. japan, N.S., No. 112, pp. 410-416, pI. 51, December 30, 1978

695.

LOWER JURASSIC AMMONITES FROM THE HIGUCHI GROUP.
SOUTHWEST JAPAN*
HIROMICHI HIRANO
Institute of Earth Science, School of Education,
Waseda University, Tokyo 160

T AKAHIKO MIKAMI and HIDEKI MIY AGA W A
Department of Geology and Mineralogy, Yamaguchi University,
Yamaguchi 753

Abstract. MU(AMI and MIY AGAW A studied the geology in and around the
Higuchi Group, which has been considered as jurassic based on the preliminary
study on some ammonites obtained from gravels of a river floor, and first succe·
eded in collecting some ammonites and bivalves from an exposure. We systema·tically describe these ammonites, Fontanelliceras cfr. fontanellense, Arieticeras sp.
and Canavaria sp. They are typical Tethyan ammonites and regarded as representative species in the Fontanelliceras fontanellense Zone of the Domerian Substage in
the Mediterranean Region.

Introduction
The southwest part of Shimane Prefecture indicated in Fig. 1 is mainly occupiedby the Upper Palaeozoic rocks which areoverlain by the Cretaceous K wanmonGroup and volcanic rocks and in part
intruded by some Cretaceous igneousrocks. The existence of the Jurassic in·this area was first reported by IMAMURA
et at. (1966) and the Jurassic was named
as the Higuchi Group. The fossils fromthe group were ammonites and bivalves,
and those ammonites were preliminarily
considered to indicate a Lower Jurassic age
by T. SATO (IMAMURA et aI., 1966). The
ammonites were, however, obtained fromgravels of a river floor. Recently, MIKAMI* Received Dec. 27, 1977; read jan. 22, 1977
at Koganei.

and MIYAGAWA have studied the geologyof this area and obtained some moreammonites and bivalves from exposures

Sea ofFig. l.

410

Japan

Map showing the studied area.

695.

Lowe1' Jurassic Ammonites from the Higuchi G1-0UlJof the Higuchi Group and also from gravelsof the River Higuchi-zawa. As the ammonites from the Higuchi Group have notbeen described yet, here we give systematic descriptions on the ammonites
collected by MIKAMI and MIYAGAWA.
We express our sincere gratitude toProfessor Emeritus Tatsuro MATSUMOTOoIof Kyushu University for his supervision,to whom we dedicate this paper to commemorate his retirement. We also express
our gratitude to members of the Geology
Club of Yamaguchi Prefecture who donatedYamaguchi University some additional
specimens, although they were not directly
quoted in this paper.

lKm*

Ammonites(Loc. H12)OJ] Kwanmon Group

Fig. 2.

411o

Hi guchi Gr.

B

Nishiki Gr.

Geological map around the Higuchi Group.

412

Hiromichi HIRANO, Takahiko MIKAMI and Hideki MIY AGAWA
Geological setting

The Higuchi Group is distributed around
Muikaichi-cho, Shimane Prefecture (Fig.
1), and its succession is observable along
the River Higuchi-zawa and the River
Kanoashigochi (Fig. 2). The strata show
a general trend of E-W in the southwestern area and that of NW -SE in thenortheastern area. They show a homoclinal structure, with a northward or
northeastward inclination.
The total
thickness is about 890 m, and the groupis lithostratigraphically divided into two
formations. The Lower Formation, 600 m,
is composed of conglomerate and sandstone and the Upper, 290 m, is of blacksandy shale, shale and fine sandstone (Fig.
3). The locality of the ammonites is in
the shaly part of the Upper Formation.
The bivalves were obtained from theUpper Formation and also the middle andupper parts of the Lower Formation. The
contact between the Higuchi Group andthe Palaeozoic Nishiki Group is a fault
and that between the Higuchi Group andthe Cretaceous Kwanmon Group is an
unconformity in some part and a fault inother part.

Systematic descriptions
Superfamily Hildocerataceae HYATT, 1867
Family Hildoceratidae HYATT, 1867
Subfamily Arieticeratinae HOWARTH,1955
Genus Fontanelliceras FUCINI, 1931
Type-species. - Harpoceras fontanellense
GEMMELLARO, 1885 (designated by VEeCHlA, 1949).
Fontanelliceras dr. fontanellense(GEMMELLARO)
Pl. 51, Figs. 4-7.

100
m

c:
o

-...
III

E
o

u..

a

*

•

~

~
"Iii

...o

E

u..

Ammonites(Loc. H 12)
Shale

1::==1

Sandy shale

D

Fine sandstoner::;:::::'l~Medium s.
Coarse s.
Conglomerate

Fig. 3. A columnar section of the Higuchi Group observed in the River Higuchizawa.

Cfr.
1885 Harpoceras fontanellense (GEMMELLARO) :GEMMELLARO, Giorn. Sci. Nat. £con.
Palermo, vol. 17, p. 12, pI. 2, figs. 1-2,
in reillustration by HAAs, 1913.
1900 Harpoceres (Arieticeras)fontanellense GEM:VIELLARO: BETTON!, Schweiz. Palaont.
Gesel. Abh., vol. 27, p. 58-59, pl. 5, figs.
10-12.
1913 Arieticeres (Vermiceras)fontanellense GEMMELLARO: HAAs, Beitr. Paliiont. Oster.
Ung. Orients, vol. 26, p. 42, pl. 3, figs.
1-2.
1931 Fontanelliceras fontanellense GEMMELLARO: FUCINI, Palaeontogr. Italica, vol. 31,
p. 110, pI. 8, figs. 21-26.
1931 Fontanelliceras juliae (BoNAR ELL!) : FuCI"!, Ibid., vol. 31, p. 111, pl. 8, figs.
28-30.

695.

Lowe?' Jnrass1:c Ammonites from the Higuchi Group

1934 Arieticeras fontanellense GE~nIELLARO:
MO:-lESTIER, Mem. Soc. geol. France, vol.
10, fasc. 3, no. 23, p. 68-69. pI. 10, figs.
48-52, pI. 11, fig. 9.
1947 Echiocems sp. a: MATSUMOTO in MA'
T5U\-IOTO and ONO, Sci. Rept. Fac. Sci.,
Kyushu Univ., Geol., vol. 2, no. 1, p. 26,
pI. 1, fig. 1.
1947 Echiocems sp. f3
MATSU~IOTO ill MA'
TSUMOTO and 0:-10, Ibid., vol. 2, no. 1,
p. 26.
1956 Fontallelliceras cfr. fontanellense (GD'IMELLARO): ARKELL, Jurassic geology of
the world, Oliver & Boyd Ltd., p. 421.
1962 Fontallelliceras cfr. fontanellense (GD'IMELLARO): SATO, Mem. Soc. geol. Fmnce, no. 94, p. 59.
1962 Fontanelliceras sp. ,8: SATO, Ibid., no.
94, p. 59.
1963 Fontanellicems cfr. fontanel/ense (GDlAIELLARO): TAKAI, MATSUMOTO andTORIYA~IA ed., Geology of Japan, Univ.
Tokyo Press, p. 84.

1968 Fontanellicems fontanellense
LARO):

CAi'"TALUPPI

and(GE,vl~IEL­
BRA~IBILLA,

Atti Soc. It. Sc. _lIlat. Museo eiv. St.
Nat. Milano, vol. 107, p. 303, pI. 28.
1971 Fontanelliceras fontanellense (GEM;vIELLARO): HIRA:'iO, Mem. Fac. Sci., Kyushu
Univ., Ser. D, Geo/., vol. 21, no. 1, p.1lI,
pI. 16, figs. 1-4.

Material.-Eleven specimens, GK. G.
11418-11428.
Descriptioll.- The whorls are evolute,enlarging very slowly. All the ribs are
simple, rather robust, straight, usually
recti radiate, sometimes somewhat prorsiradiate, and widely interspaced. They
spring from the umbilical seam, keeping
the strength nearly uniformly and abruptly
fade away at the ventral shoulder. The
venter has at least a distinct keel, but thedetails are not observable because of theunfavourable preservation.
Remarks.-All the specimens are embedded in parallel to the bed and compressed not only vertically but also horizontally. Because of this mode of pre-413

servation, the mensuration is omitted but
figures are shown in natural scale.
Comparison.- The present specimens areclosely allied to the hitherto illustrated
specimens of F. fontanellense. They havesomewhat more numerous ribs than the
Toyora and the Italian specimens. The
number of ribs is, however, known toshow a fairly large variation (HIRANO,
1971) and therefore on this occasion the
difference is regarded as non-significant.
As the specimens before us are too poorly
preserved to identify them precisely, wecall them F. cfr. fontanellense, although
no clear difference is detected in the observable characters.
F on tanelliceras juliae (BONARELU) is
said to be distinguished from F. fontanellense by FUCINI (1931, p. Ill) in that its
ribs are less numerous and somewhat
rursiradiate near the aperture. These
differences are minor and perhaps in theextent of variation of F. fontanellense as
considered byCANTALUPPI and BRAMBILLA(1968). In fact the present specimens arealso comparable with the specimens illustrated under the name of F. juliae by
FUCINI (1931, p. 111, pI. 8, figs. 28-30).
Fontanelliceras retrorsicosta (OPPEL) was
distinguished from F. fontanellense by its
sharp, slightly arcuate forward and rursiradiate ribs by FUCINI (1931, p. Ill, pI.
3, fig. 27). As the ribs of the present
specimens are usually rectiradiate andoccasionally prorsiradiate, they are distinguished from F. retrorsicosta.
Locality. - Three specimens, GK. G.
11418-11420, are from the exposure (loc.
H 12) of the Upper Formation of the
Higuchi Group in the River Higuchi-zawa,
Muikaichi-cho, Shimane Prefecture andeight specimens, GK. G. 11421-11428, arefrom gravels at a point a few meters
downstream from the loco H 12 (Figs. 2-3).

414

Hit'o1nichi HIRANO, Takahiko 2VIIKAMI and Hideki MIYAGAWA

Genus Arieticeras SEGUENZA, 1885
Type-species. - Ammonites
OPPEL, 1862.

algovianum

designated by HOWARTH, 1955).
Canavaria sp.
PI. 51, Figs. 2-3.

Arieticeras sp.
PI. 51, Figs. la-b.

Material.-A single fragmentary specimen, GK. G. 11429.
Description.- The whorl is somewhat
involute, enlarging fairly rapidly. The rib
is simple, fairly robust and stronger on theouter part of the flank. It is rursiradiateon the flank ~hd abruptly bent forward
at the ventral shoulder. The interspace
between the ribs is nearly as wide as totwo times as wide as the rib. The rib
fades away as it approaches to a strong
ventral keel.
Comparison.-As the present specimen isfragmentary, the identification at the
specific level is very difficult. It resembles
the three specimens of Arieticeras delcampanai (FUCINI) illustrated by HAAs (1913,
p. 68, pI. 2, figs. 13-15) in the mode of
volution and ribbing, but is distinguishedin that the latter species has recti radiateribs.
It is also similar to the specimens ofArieticeras algovianu11l (OPPEL) illustrated
by CANTALUPPI and SA VI (1968, p. 240,
pI. 20, figs. 9-11) and by CANTALUPPI and
BRAMiLLA (1968, p. 294, pI. 27, figs. 2-3)
in the mode of ribbing but is distinguishedby its tighter volution.
Locality.-The specimen was obtained
from a gravel of a river floor at a point a
few meters downstream from the exposure
H 12 in the River Higuchi-zawa, in Mui-:kaichi-cho, Shimane Prefecture (Figs. 2-:-3).

Genus Canavaria GEMMELLARO, 1886
Type-species. - H arpoceras (DunlOrtieria)
haugi GEMMELLARO, 18'85 (subsequently

Material.- Two specimens, GK. G.1143011431.
Descriptioll.-The volution is moderate,with a moderate growth of whorls. The
rib is simple and somewhat strong. It
starts forward from the umbilical seam,
going outward radially and then curves
forward again at the ventral shoulder.
Thus it is somewhat flexuous on the flankand the interspace is about two or threetimes as wide as the rib. Some of theribs are tuberculated at the umbilicalshoulder. A keel is discernible on theventer.
Comparison~- The present specimens are
similar to the specimens of Canavaria
nodosa (FUCINI) (1931, p. 146, pI. 20, figs.
10-17) in the mode of volution and ribbing.
It shows a slower growth rate of thewhorl-height than Canavaria japonica(MATSUMOTO) (HIRANO, 1971, p. 110, pI.
15, figs. 1-6) and Canavaria cfr. sicula
FUCINI (HIRANO, 1971, p. Ill, pI. 15, fig. 7).
The available specimens are too poorly
preserved for a precise specific identification.
Locality.- The specimens were obtained
from a gravel of a river floor at a point a
few meters downstream from the exposure
H 12, in the River Higuchi-zawa, Muikai·
chi-cho, Shimane Prefecture (Figs. 2-3).

Discussion
Among the described ammonites, three
specimens of Fontanelliceras cfr. fontanellense were obtained from an exposure (H12) 'ofthe Upper Formation of the Higuchi
Group and the others were from the rivergravels' at the point a few meters downstream from the exposure in the same'695.

Lowe?" Jurassic Ammonites form the Higuchi G?"OUP

river. Because all of these three genera
are representatives in the Fontanelliceras/ontanellense Zone of Domerian, the upper
substage of Pliensbachian, at least theupper part of the Upper Formation of the
Higuchi Group can be correlated with theF. /ontanellense Zone.
The genera described above have also
been known from the Toyora Group about
90 km to the west of this area, and as
was discussed previously (HIRANO, 1973),
they are of typical Tethyan elements.
Among the three, Canavaria is also known
from the Kuruma Group (SATO, 1955, p.
114-117) in the northeast. As one specimenof Amaltheus from the Toyora Group andsome more from the Kuruma Group havebeen reported, it is clear that the Tethyan
and the Boreal elements intermingled in
the area from Toyora via Higuchi to Kuruma, with a southwestward increasing
number of Tethyan elements.
References cited
ARKELL, W. J. (1956): Jurassic geology of
the world. Oliver & Boyd Ltd., 806 p.
BETTO?>;I, A. (1900): Fossil Domeriani dellaprovincia di Brescia. Mbn. Soc. Pa/eont.
Suisse (Schweiz. Paliiont. Cesel. Abh.),
vol. 27, p. 1-88, pI s. 1-9.
CA?>;TALUPPI, G. and BRA:VIBILLA, G. (1968):
Le ammoniti del Ripiantino (Saltrio) edella Breggia (Canton Ticino). Atti Soc.
It. Sc. Nat. Museo Civ. St. Nat. Milano,
vol. 107, fasc. 3-4, p. 277-315, pIs. 22-29.
CANTALUPPI, G. and SAVI, A. (1968): Le
ammoniti di Milano Gresso dolona (Varesotto). Ibid., vol. 107, fasc. 3, p. 205261, pIs. 18-22.
FUCINI, A. (1931): Fossili domeriani dei
dintorni di Taormina Part 4. Palaeontogr.
Italica, vol. 31, p. 93-149, pIs. 5-2l.
HAAS, O. (1913): Die Fauna des mittleren

Higuchi-zawa tii!i D lR"

415

Lias von Ballino in Sudtirol. Beitr. Pa·
liiont. Oster. Ung. Orients, vol. 26, p. 1161, pIs. 1-7.
HIRANO, H. (1971): Biostratigraphic study of
the Jurassic Toyora Group. Part 1. Mem.
Fac. Sci., Kyushu Univ., Ser. D, Ceol., vol.
21, no. 1, p. 93-128, pIs. 14-20.
- - (1973): Ditto. Part III. Trans. Proc.
Palaeont. Soc. Japan, N.S., no. 90, p. 4571, pIs. 9-10.
1:,.,IAMCRA, S., NCREKI, T. and O[(I:-WRA, Y.
(1966): The outline geology of west Chu·
goku backbone mountains. Sci. Exped.
Rept. Nat!. Park west Chugoku mountains.
p. 27-48, pIs. 5-10, ~Shimane Prefecture(in Japanese).
MATSUMOTO, T. and O?>;O, A. (1947): A biostratigraphic study of the Jurassic Toyora
Group, with special reference to ammonites. Sci. Rept. Fac. Sci., Kyushu Univ.,
Ceol., vol. 2, no. 1, p. 20-31, pIs. 1-2 (inJapanese) .
MO:-:ESTIER, J. (1934): Ammonites du Dome·rien de la region sud·est de l'Aveyron
et de quelques regions de la Lozere al'exclusion des Amaltheides. Mem. Soc.
geol. France, vol. 10, fasc. 3, no. 23, p.
1-102, pIs. 1-11.
MOORE, R. C. (1957): Treatise on Invertebrate
Paleontology Pal-t L, Mollusca 4. Geol.
Soc. Amer. and Univ. Kansas Press, 490 p.
(For the taxonomic scheme of higher category we followed this book without anindication) .
SATO, T. (1955): Les ammonites recueillies
dans Ie groupe de Kuruma, nord du Japon
central. Trans. Proc. Palaeont. Soc. Japan,
N. 5., 20, p_ 111-118, pI. 18.
- - (1962): Etudes biostratigraphiques desammonites du Jurassique du Japon. Mem.
Soc. geol. France, no. 94, p. 1-122, pIs. 110.
TAKAI, F., MATSUMOTO, T. and TORLYAMA,
R. ed. (1963): Geology of Japan. Univ.
Tokyo Press, 279 p.

Kanoashigochi mUEiilJl"l, Muikaichi-cho A 13 mlBJ,Hirornichi HIRANO, Takahiko MIKAMI and Hideki MIY AGAWA

416

tiJljlJ 1'.i1 ll'FiJ' !? O)ii1iM:; ;L '7 *c~:fi: WIJ· $B1;jjlijfM:. :Ji€-t:Q B1;llUlb', 13 mlllJm IJ iRi:.t'l,

4-H· ttl!. (1966) I:'';: I):;;L '7*cc}i~.l,;hn:Q:itt!~iJ;5t;(P I.... -c,':Q;:' ciJ:*iT~n, mlJ~~c-6P-i5 ~n -C \":Q LiJ'L, ;:. n i "c:; ;L '7 *cO)mE~ c ~nt-:~:fiIH!l.;:fi LiJ,w.!?n -C tJ: <, X
F,c.Jllll:*~ ~ 1MiJ' -:,1-:0 :/&~, ::::1:. -gJlllij)ffi IJ @~0)5t;(P c -t:-O)@i'f:&UmiZll\Ii c O)M*~~0~t-:I:.:itt!1\IJ tJ:!? VqqZ:;:fiiJ' !?~:fi C =ttfJ. ~;5TW.t-:o ;:. h!? O)~Ell Fontanelliceras
efr. fontanellense, Arieticeras sp., Canavaria sp. c ~IJIl)-J Lt-:o \, 'i'h ~ f!!jj]O)f,tiiffl@~
iJ,!?j;o!?n -C,':Q~ -C', :itt!.pw:illij]O) '7 -{ 7 A • r -" ~ 7 /]lli~ Fontanelliceras fontanellense *O)(-I(;~B9tJ:~-C'i6:Qos[z!Ilfi1LJi[. ::::1:JJ:7ffi. -gJII%tlt"""

Explanation of Plate 51(All in natural size)
Fig. 1. Adeticeras sp.
1a. GK. G. 11429, lac. A few meters downstream from the exposure H 12 in the River
Higuchi-zawa, Muikaichi·che, Shimane Prefecture.
lb. Rubber cast of lao
Figs. 2-3. Canavaria. sp.
2. GK. G. 11430, lac. A few meters downstream from the H 12 in the River Higuchi-zawa.
3. GK. G. 11431, lac. A few meters downstream from the H 12 in the River Higuchi-zawa.
Figs. 4-7. Fontanelliceras efr. fontanellense (GEMMELLARO)
4, Rubber cast of GK. G. 11424, lac. A few meters downstream from the H 12 in theRiver Higuchi-zawa.
;). GK. G. 11418, lac. H 12 in the River Higuchi-zawa_
6. GK. G. 11421, lac. A few meters downstream from the H 12 in the River Higuchi-zawa.
7. GK. G. 11426, lac. Same as above.

HIRANO et al.:[.lower Jurassic ammonites

Plate 5 f

2

5

3

6
1

Trans. Proc. Palaeont. Soc. Japan, N. S., No. 112, pp. 417-423, pIs. 52, 53, December 30, 1978

696.

A NEW SPECIES OF BANKIA IN PALEOGENE FOSSIL WOOD,
FROM AMAKUSA, KUMAMOTO PREFECTURE, JAPAN*
MASAO OTSUKA~latsubase

Higashi School for Physically Handicapped
Children, Kumamoto 869-05

Abstract. Many tube·fossils penetrating in fossil woods, Taxodioxylon matsuiwa
are found from Paleogene strata cropping out at seaside exposures near
Shimoda, Amakusa-machi, Amakusa-gun, Kumamoto Pref. They belong to a new
species of the genus Bankia judging from the well preserved valves and pallets,
and are described herein as a new species, Bankia amakusensis.
WATARI,

During the course of my geologicalstudy, I collected many pieces of fossil
wood together with some molluscan shells
from strata cropping out near a small
promontory to the southwest of Shimoda,
Amakusa-machi, Amakusa-gun, Kumamoto
Prefecture. This fossil wood is identified
as Taxodioxylon matsuiwa WATARI (TAKAHASHI, 1969), a fossil log which is wellknown from the Paleogene of North Kyushu. This paper deals with the description of a new species belonging to Bankia,
a wood-boring bivalve genus, based on its
shells and well-preserved pallets in the
tube. Also a discussion is given on thegeological age of the Bankia-bearing
strata, which have not necessarily been
determined.
The formation yielding the fossil wood'Matsuiwa (pine rock)' is composed ofalternations of sandstone and black shale.
It attains thickness of more than 80 m
(Text-fig. 1) but its geologic distribution
is narrow. This formation is in fault con* Received Jan. 17, 1978; read Oct. 16,

tact with the U-IV member of the Upper
Himenoura Subgroup (Upper Cretaceous)(T ASHIRO, 1976) both on the north andsouth sides. The geological map andcolumnar section of this area are shownin Text-fig. 1. According to NAGAO (1926a,
1926b), the geological age of the formation which he called the Fukami Sandstone is Paleogene. Later, MATSUSHITA(1949) and MATSUSHITA et al. (1959) called
it the Fukami Formation and dated it also
as Paleogene. On the other hand, thegeological age of the formation was regarded as Late Cretaceous by MIKI (1972,1975). Recently, the Fukami Formationin its type area was described as Upper
Cretaceous by TASHIRO & NODA (1973),
TASHIRO (1976) and TASHIRO & OTSUKA(1976). The Bankia-bearing formation isundoubtedly correlatable with the Paleogene by the occurrence of such fossils as
Taxodioxylon matsuiwa (see Text-fig. 2),
Venericardia (Venericor) cfr. nipponica(see Text-fig. 2), Crassatella (Eucrassatella)cfr. nipponensis. Consequently it must be
excluded from the Fukami Formation.

1977, at Kumamoto.

417

Masao OTSUKA

418

N

N

t

+

m

SO ......... .

......................

o401~lf
:

~

:..:

:

~1
I·:·:
ps·:··:12
.....

X

6

1<.......
cs· :;13t\\#~:.~ 4
o
I

100m
I

Text-fig. 1. Geological map and columnar section (Paleogene group) of Shimoda area.
1: black shale (Paleogene)
2: medium sandstone (Paleogene)
3: coarse sandstone (Upper Cretaceous)
4: alternation of sandstone and shale (Upper Cretaceous)
5: lithoidite
6: Bankia anzakusensis locality
Ak: Amakusa-Kamijima
As: Amakusa-Shimojima

The specimens described in this paper
were collected at seaside exposures about
800 m south-southwest of Shimodakita of
Shimoda, Amakusa-machi, Amakusa-gun,
Kumamoto Prefecture and are depositedin the collection of the Faculty of Education, Kumamoto University.
Before going further, I would like toexpress my hearty thanks to Professor
Minoru TAMURA of Kumamoto University
for his continuous guidance and reading
the manuscript. I also thank Dr. Masa-

yuki TASHIRO of Kochi University, for hiskind suggestion and encouragement.
Description of Species

Family Teredinidae RAFINESQUE, 1815
Subfamily Bankiinae TURNER, 1966
Genus Bankia GRAY, 1842
Remarks: - The classification of thesubfamily Bankiinae has been undertaken

696. Ban kia i n Paleogen e Fo ssil Wooel

419

A

B

Te x t·fi g . 2.

A : Cross sec tion of T axodioxy {on matsu i wa W A T A I~ I ; x 21. 3 ;Reg. No. KE 28 18.
B: Left va lve of Vene rica rdia (Vene ricor) cfr. nip pon ica
YOI<OY A~'I A; X O. 8; Reg . No. KE 281 9.

by TURNER (1966) based on th e featuresof soft part and the shape of pallet. The
genus Banlzia is described by him as
fo llows: "Pall ets elongate, compound,cones easi ly separable and removed fromstalk. The cone is composed of periostracum in upper marginal part and of
calcareous matter in most oth er part".
Th e g enus has been considered as including numerous subgenera, which can be
distinguished by the shapes of pall et andscu lptures of the periostracum in upper
marginal part (TURNER, 1966). As no
periostracum is observable in th e Shimoda
specimens, subgeneric position of this new
species cannot be determined. T his species, however, is similar to LY1'odo banl?ia(= Banlliopsis) which has deep-cupped
cones with the smooth upper margin anda small number of cones.
B an kia (s. I.) amalmsensis OTSU K A,

new species
PI. 52, Fi gs. 1- 12 ; PI. 53, Fi gs. 1- 12;
Te x t-fi g. 3

Desaiption :-Shell medium for genus,
subglobular, equ ivalve, nearly as long as
high, test comparatively thin, divided into
three areas- anterior slope, disc and posterior slope ; umbo small, located at apoint of on e th ird of length from front,
rising high above dorsal margin ; beakstrongl y incurved ; anterior slope subtriang ular, pro vided with about 50 fin edenticulated ridges of which upper 20 or
so are distinct and w idel y spaced fromeach other and lower 30 or so are narrowand closely spaced; disc divided into
anterior and posterior parts by umbonalventral sulcus ; anterior part of disc , occup ying about 1/ 3 width of disc, ornamented by denticulated ridges which continue to those on anterior slope formin gnearl y a right angle; posterior part ofdisc broad e r than anterior part, nearl ysmooth except for growth lines; posterior
slope semicircular, posterior margin round ed, anterior portion slightly convex; apoph ys is narrowl y elongated and slightl ycurved ; cross section of apophysis nearl ycircular; ventral cond yle at end of internal

420

Jllasao OTSUKA

ridge corresponding to umbonal-ventral
sulcus distinct; inner shelf strongly elevated.
Pallets calcareous, with stalk and blade;stalk columnar, straight, occupying about
1/3 length of pallet; blade formed byabout 8 cones; about 3 cones of distal

part small, nearly circular, closely spaced;the other cones large, distantly spaced;horizontal section of the larger cones
spindle-shaped; the outer side of horizontal
section of the larger cones more convex
than the inner one; cones separable andeasily removed from stalk.

Table 1. Measurements of Bankia (s. I.) amakusellsis, n. sp.
Shell specimens
KE·2791, right internal mold.(I!;E 2792, right innternal mold
KE 2793, right external mold
KE 2794, right val ve
Total
Pallet specimens
lengthKE 2794
12.1+
KE 2795
11.5+
KE 2796

Observation;- The tube is calcareous,
twisting, narrow at the posterior extremityand gradually enlarges into the rounded
anterior extremity. The cross section of
the tube is circular. The anterior extremity is about 5 mm in diameter in most
specimens. The entire length of the tube
is about 80 mm in most specimens. The

Length
4.5
4.1+
4.4
4.3
Lengthof stalk
4.0+
3.0+
3.8+

Height4.3+
4.0+

Lengthof blade
8.1
8.5+

Thickness
2.0
1.8
2.2+
Diameterof blade
1.8+
2.0+
2.0

test is smooth and formed with aboutfour calcareous layers. The ratio of thediameter of the anterior extremity to thethickness of the test is 16.0±0.1. The
tube is filled up by calcareous sand or
mud. Though I collected about 200 valves
and about 50 pallets, the material of thisnew species is represented only by in-

Explanation of Plate 52
Bankia (s.l.) amakusensis, new speciesla, b. External mold of right valve; showing surface ornamentation (la) and surface ornamentation of anterior slope (lb); x 12; Reg. No. KE?793.
2. External mold of right valve; showing surface ornamentation of anterior slope; x 10;Reg. No. KE 2797.
3. Cross section of anterior slope of valve; showing surface ornamentation of denticulated
ridges; x 47; Reg. No. KE 2798.
4. External mold of right valve; showing surface ornamentation; x 18; Reg. No. KE 2799.
5. Right valve (holotype); showing surface ornamentation; x 10; Reg. No. KE 2800.
6a, b. Internal mold of right valve (paratype); showing surface ornamentation (6a) andposterior dorsal part (6b); x 7. 6; Reg. No. KE 2791.
7. Cross section of right valve in tube; x 5. 2; Reg. No. KE 2801.
8. Cross section of left valve in tube; x 7; Reg. No. KE 2802.
9. Cross section of left valve in tube; x 8; Reg. No. KE 2803.
10. Umbonal-ventral section of left valve in tube; x 7; Reg. No. KE 2804.
11. Umbonal·ventral section of right valve in tube; x 5. 4; Reg. No. KE 2805.
12. Umbonal-ventral section of both valves in tube; x 10; Reg. No. KE 2806.

OTSUKA:

Bankia in Paleogene fossil wood

Plate 52

lb

4

2

6a

3

12

11
-,

.. - \' - : - -~,-- - - - --(- , f·'!

696 . Bankia in Paleogene Fossil Wood

3
~)

T

421

4

H

~ r
"

Text- fig . 3. B anlzia (s. I. ) amaizu sensis, new spec ies
E x tern a l surface orname ntation of ri g ht val ve,(A : ant e rior slo pe, B: dis c, C: pos ter ior slo pe)
2 : Intern a l structur e of righ t va lve ,(D: apophys is , E : ventra l condy le , F: in ne r sh e lf)
3 : Outer surface of pallet ,(G: con e, H: s t al k, I : bla de )4 : Inner s urface of pa ll et.
* scale: 1mm .
1:complete shell s and pall ets. The tissueof the woods is r e placed almost completely
by calcite. T he wood is light-brow n incolor in weathered specim ens and black incolor in fresh specimens.
Co mparison :- The fossil pall ets ha vebeen known in B an l?ia parisiensis DES HAYES (T URNER, 1966) described from the
Eocene of France. This speci es di ffe rs
f rom B ankia parisiensis in having anelongate pallet and less number of thecones.
T eredo matsushimaensis I-IAT AI,

1951 (HAY AlVIl, 1966), from the Lower
Cr e taceous iVli ya ko Group, Iwate Prefect ure, differs markedly from the new species in its larger size of t ube and valves_
Banl?ia amahusensis is similar to B anhia(Lyrodobanhia) carinala GRAY (TURNER,
1966, 1969) (=B. (B anhiopsis) caribbea
CLENCH an d T URNER, 1946) in having thecones w hich are dee p-cup shaped, a smoothmargin and in havin g not crowded at the
distal end. How ever, the number of thecone is less in t his s pecies t han in B ankia

422

Masaa OTSUKA

Furthermore,
the number of the denticulate ridge on
the valve is more numerous in this species than in Bankia (Lyrodobankia) cm'-

(Lyrodobankia)

carinata.

inata.
Occurrence : -The specimens of this new
species are found in fossil woods, Taxodioxyloy matsuiwa WATARI, occurring as

nodules in a black shale, at the seaside
exposures about 800 m south-southwest of
Shimodakita of Shimoda, Amakusa-machi,
Amakusa-gun, Kumamoto Prefecture.
References cited
CLENCH, W. and TURNER, R. D. (1946): The
genus Bankia in the Western Atlantic.
johnsonia, vol. 2, no. 19, p. 1-:18, 16 pis.·
HATAI, K. (1951): A Lower Cretaceous Teredo. Short Papers from the Institute of
Ceology and Paleontology, Tohoku Univ.,:
no. 3, p. 29-32, pI. 5.
HAYAMI, I. (1966): Lower Cretaceous marine
Pelecypoda of Japan, Part 3. Mem. Fac.:
Sci., Kyushu Univ., Ser. D, Ceol., vol. 17,
no. 3, p. 151-249, pis. 22-26.
MATSUSIIITA, H. (1949): Geology of the coal
fields in Northern Kyushu. jour. Min.
Inst. Kyushu, spec. vol., p. 1-57. (in Japanese) .
- - , TAKAI, Y., TAKAHASHI, R., URATA, H.,]WAHASHI, T., OHARA, J., TOMITA, S. andOTA, K. (1959): On the geological boundary between the Cretaceous and the
Paleogene in Amakusa-Shimo-shima. "Yiikochii" ,no. 10, p. 30-41. (in Japanese).
MIKI, T. (1972): Cretaceous-Tertiary unconformity in the western part of AmakusaShimoshima.
Mem. Fac. Sci., Kyushu
Univ., ser. D, Ceol., vol. 21, no. 2, p.217237, 2 pIs.
- - (1975): Formation and development of
sedimentary basins during the Paleogene
in Amakusa and its adjacent areas, western Kyushu. Mem. Fac. Sci., Kyushu
Univ., ser. D. Ceol., vol. 23, no. 2, p. 165209, 5 pIs.
NAGAO, T. (1926a): Paleogene stratigraphy
in Kyushu, Part 1. jour. Ceogr. Soc. Tokyo,
vol. 38, no. 445, p. 115-130. (in Japanese).
- - (1926b): Paleogene stratigraphy in Kyushu, Part 2. jour. Ceogr. Soc. Tokyo, vol.
38, no. 447, p. 263-269. (in Japanese).
TAKAHASHI, R. (1969): Betrachtungen tiber
verkieselte Holzer inden Kohlenlagern,
insbesonders ihre Verkieselungsvorgange.
Sci. Rept., Kyushu Univ., Ceol., vol. 9, No.
1, p. 45-51, 3 pIs.
TASHIRO, M. and NODA, M. (1973): Thegeological age of the Himenoura Group,
Kyushu, Japan. joul'. Ceol. Soc. japan,
vol. 79, no. 7, p. 465-480, pI. 1. (in Japanese) .
- - (1976): Bivalve faunas of the Cretaceous
Himenoura Group in Kyushu. Palaeont.

Explanation of Plate 53
Bankia (s.l.) amakusensis, new species
1.
2.
3.
4_
5.
6.
7.
8.
9.

One pair pallets (paratype) ; showing surface structure of blade; x 12; Reg. No. KE 2807.
Vertical section of pallet; x 14; Reg. No. KE 2808.
Diagonal section of pallet in tube; x 5.5; Reg. No. KE 2809.
Vertical section of one pair pallets; x 14; Reg. No. KE 2796.
Cross section of pallets; showing cross section of larger cones; x 28; Reg. No_ KE 2810.
Pallet (paratype); showing outer surface of larger cone; x 9; Reg. l"o. KE 2811.
Pallet in tube; showing cross section of larger cone; x 9; Reg. l"o. KE 2812.
Left valve and pallets in tube (paratype); x 9; Reg. No. KE 2813.
Diagonal section of valve (lower) and vertical section of pallet (upper) in tube; x 7; Reg.
No. KE 2814.
10. Cross section of both valves in tube; 3.5; Reg. No. KE 2815.
11. Vertical section of tubes; xI. 7; Reg. No. KE 2816.
12. Cross section of tubes; x 1.6; Reg. No. KE 2817.

OTSUKA:

Bankia m Paleogene fossil wood

Plate 53

4
3

2

5

8

12
10

11

696.

Bankia in Paleogene Fossil Wood

Soc. Japan, spec. pap. no. 19, p. 1-102,23
text-figs., 12 pis.
- - and "OTSUKA, M. (1976): Inoceramus
from Hayaura in Ushibuka City, Kumamoto Prefecture. Jour. Ceol. Soc. Japan,
vol. 82, no. 2, p. 139-141. (in Japanese).
TURNER, R. D. (1966): A survey and illustrated catalogue of the Teredinidae. Mu-

Amakusa ](1/f.,
machi ](1/f./IlJ,

423

seum Compo Zoology, Harvard Univ., Cambridge, lv/ass, p. 1-265, 25 text-figs., 64 pis.
- - (1969):
Superfamily Pholadacea, inTreatise Oil Invertebrate Paleontology
UVIOORE ed.), -(2) Mollusca 6-, Ceol.
Soc. America. and Univ. Kansas Press, p.
;\702-742.

Amakusa-gun ](1/f.!\1l,
Amakusa-Kamijima X",'[_lr.~,
AmakusaAmakusa-Shimojima ;J(liCflZj,
Shimoda -fiJI,
Shimodakita TIIl~t

fl~*i)j!,;J(1/f.ilEl"1~fr:=*c.{t;fi*cpO)

Bankia O)-~t!l!:

i1~*ljr~J(1i'ij:l\ ;J(1j[II/j"r"EI3NJ!IO)

1"1~::::*bd? Taxodioxylon matsuiwa WATARI O)fldt*re~.JL L t-: ~;:bIUt;fi>a:-fk1* l...t-:.

{t;fivt(Jj':ff-N/tJts:IDtc ,~ v'Y He J: f), Bankia ~le?;-i h ;,;,'iTrf.if!-c';O;,;, ~ c b;~{(ii6 Ght-:O)-C-, ;:;: le~t!l! Bankia amakusensis, n. sp. c VCli'.JliR Lt-:. ::k~1iJ;i)j

Trans. Proc. Palaeont. Soc. japan, N. S., No. 112, pp. 424-433, pI. 54, December 30, 1978

697.

NEW SPECIES OF APIOTRIGONIA AND SENIS FROMTHE UPPERMOST CRETACEOUS OF HOKKAIDO*MASA YUKI TASHIRO
Department of Geology, Faculty of Science, Kochi University

Abstract. Apiotrigonia hetonaialla sp. nov. from the Hakobuchi Group and the
Chinomigawa Formation in Hokkaido, is probably a derivative from ApiotrigOllia
crcssoradiata NAKANO. The former is restricted to the Upper Campanian andMaestrichtian, while the latter is known from the Lower to Middle Campanian in
Hokkaido, Shikoku and Kyushu. Senis japonica sp. nov. is an edentulous bivalve,occurring from the Hakobuchi Group (Maestrichtian) in Hokkaido. This is thefirst record of Senis in the Cretaceous of japan.

1957, 1960; NODA and T ASI-IIRO, 1972;TASHIRO and NODA, 1972 ; TASHIRO, 1976).
senis japonica sp. nov., is probably the
first species of this genus known from theJapanese Cretrceous.
Before going into the description, I wish
to express my sincere thanks to Professor
Minoru TAMURA of Kumamoto University,
for his kind encouragement and readingof this manuscript. I also thank Emeritus
Professor Tatsuro MATSUMOTO of Kyushu
University for supplying me precious data
about the Hakobuchi Group and his kindadvice.

Introduction and Acknowledgements
This paper deals with the descriptionof two new bivalve species, Apiotrigonia
hetonaiana sp. nov. and Sen is japonica sp.
nov., and also Apiotrigonia crassoradiata
NAKANO from the Hetonaian of the Upper
Cretaceous in Hokkaido.
NAGAO andOTATUME (1938) referred the specimensfrom two localities. 'Hetonai' and 'Omagari', both at Tomiuchi, lburi District,
Hokkaido, to Trigonia subovalis JIlVIBO var.
minor YABE and NAGAO. The specimensfrom 'Hetonai' are actually referable to
Apiotrigonia hetonaiana sp. nov., and thespecimens from 'Omagari' belong toApiotrigonia
crassoradiata
NAKAl\O.
Apiotrigonia hetonaiana sp. nov. may havebeen derived from Apiotrigonia crassoradiata NAKANO in the same lineage.
The former is restricted in the Upper
Campanian and Maestrichtian. On theother hand, the latter is known from theLower to Middle Campanian (NAKANO,

Systematic description
Family Trigoniidae LAMARCK, 1819
Genus Apiotrigonia Cox, 1952

Apiotrigonia hetonaiana, sp. nov.
Plate 54, Figs. 1-4, Text-fig. 21938. Trigonia subovalis JLMBO var. minor:
NAGAO and OTATU!\lE; jour. Fac. Sci.,
Hokkaido Imp. Univ., ser. 4, vol. 4, nos.

* Received jan. 23, 1978; read Oct. 15, 1977:'It Kumamoto.

424

697.

Two New Species of Apiotrigonia and Senis

425

a
)(

500 m

II

4

k m

Text-fig. 1: Maps showing fossil localities
I. Tomiuchi Area, 0: Omagari P: Panketosanosawa T: Tomiuchi
a: Apiotrigonia hetonaiana, sp. nov.
b: Senis japonica, sp. nov.
c: Apiotrigonia crassoradiata N AKA";O
II. Urakawa Area, U: Urakawa C: Chinomigawa
d: Apiotrigonia hetonaiana, sp. nov.
1-2, pp. 42-43, pl. 1, figs. 7 and (?) 9(non. fig. 8).

Material:- The holotype eKE 2776) is aleft valve collected from Panketosanosawa
of Tomiuchi, Hokkaido. Three para types
eKE 2777-KE 2779) were collected fromthe same locality as the holotype. Twoother paratypes eKE 2780-KE 2781) are
internal and external moulds of rightvalves collected from Chinomigawa of
Urakawa, Hokkaido.
Description :-Shelliarge for Apiotrigonia,
triangularly subovate, longer than high,moderately inflated; anterior margin semicircular; ventral margin nearly straightor slightly convex on anterior half and alittle concave on posterior half; posterodorsal margin nearly straight except for
weakly concave umbonal region; siphonal
margin short, well rounded; umbo weakly
prominent, a little opisthogyrous, locatedat about one-fourth of length from frontof valve; escutcheon narrow, wedge. shaped. well depressed, ornamented with
about 15 plain and horizontal costellae;
area narrow, smooth except for fine]vlasayuki TASHIRO

426

growth lines; disk ornamented with about
12 broad and low subradial costae which
are crossed by growth lines on the posterior half the foremost subradial costa
extends from a point on marginal carina
a little behind the umbo toward ventral
margin; two or more anterior subradial
costae short, stretch nearly vertically but
do not reach ventral margin; next fouror more costae long, subvertical, sometimes
bifurcated on ventral part; several remaining costae run obliquely; anterior half ofthe disk nearly smooth except for irregularly spaced growth lines; subinternalsurface of anterior half of disk characterized by numerous and fine radial striae;
posterior carina not elevated, only visible
as a boundary line between smooth area
and costella ted escutcheon; marginal
carina not angulated except for near umbo,
forming a broad and blunt ridge, by which
the disk is boundered from depressed
postero-dorsal part; median groove of area
narrow but distinct; inner anterior margin
finely crenulated; inner postero-ventral
margin coarsely crenulated ; inner posterodorsal margin more coarsely crenulated

Text-fig. 2·

than anterior marginal crenulations but
more finely than postero-ventral margin;
These three sorts of the crenulations are
related to the subradial costae on posterior half of disk, subinternal radial striae
on anterior half of disk and horizontal
costellae on escutcheon.
Measurements (in mm):Length Height Thickness
KE 2776, 1. v.
50.2
36.0
9.5
KE 2777, r. int. mol. 49.8
33.4
KE 2780, r. v.
49.8
34.3
9.7
KE 2778, r. ext. mol. 44.8
29.4
6.0
KE 2779, 1. v.
8.5
4.4
1.0
KE 2782, imperfect
41. 2+ 26.5+
r. int. mol.
SpecimenObservation:- This species is characterized by the fine crenulations on the inneranterior margin. The number of crenulations are 18 or more in the distance of
1 cm along the margin of the adult specimens. The concentric or subhorizontal
costae which are one of the importantcharacters of Apiotrigonia ('anterior series'
by NAKANO, 1957; MAEDA and KAWABE,
1966; TASHIRO, 1972) appear on the anterior half of the disk in the immature

Apiotrigonia hetonaiana, sp. nov., scale: 1 em.

697.

Two New Species of Apiotrigonia and Senis

specimen of this species (See pI. 1, fig. 3).
The radial striae on the subinternal surface of the anterior half of the disk areparticularly crowded on the upper part of
the anterior marginal region. The striae
are observable on the disk, if the surface
is more or less weathered.
Remarks:-These specimens are undoubtedly conspecific with a part of thespecimens which was described by NAGAO
and OTATUME (1938) as "Trigonia subovalis
JIMBO var. minor YABE and NAGAO" from
Tomiuchi (Hetonai), Hokkaido. One of
their specimens (NAGAO and OTATUME,
1938: pI. l. fig. 7) is an internal mould ofright valve which is similarly charcterized
by the marginal crenulations of threeorders. The other specimen (fig. 9) shows
ill-preserved surface ornamentation, but
has weak subradial costae on the posterior
half of the disk.
Comparison:- This species is closely
similar to Apiotrigonia crassoradiata NAKANO, 1957 (TASHIRO, 1976) from theLower Campanian of the Izumi Group of
Shikoku, and the Middle Campanian of
the Upper Himenoura Subgroup of Koshikijima island of Kyushu, in having asmooth area and the occasionally bifurcatedsubradial costae on the posterior half ofthe disk. This species can however, be
discriminated from Ap. crassoradiata by
the entirely smooth anterior half of thedisk and the finely crenulated inner anterior margin. Apiotrigonia obsoleta NAKANO, 1957 (TASHIRO, 1972) from the Izumi
Group and the Lower Himenoura Subgroupof Kyushu, somewhat resembles this species in the smooth area and the nearlysmooth anterior half of the disk, but Ap.
obsoleta clearly differs from this species
in the smaller shell, smaller number ofthe subradial costae on the posterior halfof the disk (4-7 in obsoleta and 12 or soin this form), and not crenulated inner anterior margin. This species is distinguish-

427

able from "Megatrigonia (Apiotrigonia)
subovalis (jIMBO)" (LIVEROVSKAJA, 1959)
from the Cenomanian of Penzhinskoja by
the elongated outline and the more numerous subradial costae on the posterior
half of the disk. "Apiotrigonia" dampierensis SKW ARKO (1969) from the Lower
Cretaceous of Western Australia has theradial striae on the anterior half of thedisk like the present new species. The
radial striae of the present species are,however, subinternal. Ap. hetonaiana sp.
nov. differs from "Ap." dampierensis in
the costella ted escutcheon.
Occurrence :-Dark greenish sandstoneof the middle part of the Fukaushi Sandstone of the Hakobuchi Group at Panketosanosawa of Tomiuchi, Iburi District, Hokkaido: Maestrichtian (Upper Hetonaian),
Inoceramus shikotanensis Zone by MATSUMOTO (1959). Greenish grey and coarse
sandstone of the uppermost part of the
Chinomigawa Formation (KANIE, 1966) at
Chinomigawa of Urakawa, Hidaka District,
Hokkaido: upper Upper Campanian or
Maestrichtian (Upper part of Lower Hetonaian), a little younger than Inoceramus
schmidti Zone.

APiotigonia crassoradiata NAKANO
Plate 54, Fig. 5, Text-fig. 31938. Trigonia subovalis JI~IBO var. minor:
NAGAO and OTATSUME; Jour. Fac. Sci.,
Hokkaido Imp. Univ., ser. 4, vol. 4,
nos. 1-2, pp. 42-43, pI. 1, (?) fig. 8(non. figs. 7 and 9).
1957. Apiotrigonia crassoradiata l'\AKANO;Japan. Jour. Ceol. Ceogr., vol. 28, nos.
1-3, p. 113, pl. 8, figs. 11, 12.
1975. Api,trigonia (Apiotrigonia) crassoradiata:
H,\YA:VIl; Univ. Mus., Univ. Tokyo, Bull.,no. 10, p. 115.
1976. Apiot rigonia crassorad iata: T ASI-IlRO ,Palaeont. Soc. Japan, Spec. Pap., no. 19,
p. 57, pI. 7, figs. 4-6.

428

Masayuki TASHIRO

Description :-Shell pyriform, longer thanhigh, moderately inflated; anterior marginsemi-circular; ventral margin weakly
arched on anterior and nearly straight orslightly sinuated on posterior; siphonal
margin small, well rounded; postero-dorsal
margin weakly concave; umbo small,slightly opisthogyrous, a little prominent,
located at about one-fourth of length fromfront of valve; escutcheon narrow, ornamented with about 20 plain and subhorizontal costellae; area entirely smooth except for very fine growth lines; disk
ornamented with two sorts of plain costae;costae of the anterior series is distributedon anterior half of disk, concentric or
subhorizontal, about 15 in number; costaeof the posterior series distributed on posterior half of the disk; among the costaeof the posterior series three or more anterior ones short, subvertical or slightly
opisthocline start from the points on amarginal carina near umbo but soon disappear without reaching ventral margin;
next two or more costae broadly spaced,stretch subvertically and weakened near
the ventral margin; succeeding eight ormore costae strong, subvertical on anterior but gradually becoming prosocline onposterior; posterior carina indistinct, but
a sulcus extends along the boundary be-

tween the costella ted escutcheon and thesmooth area; median groove very weak;marginal carina indistinct except for nearumbo; an elevated but not angulated
ridge which bounds the depressed posterodorsal part from the main part of the shell,
extends from umbo to postero-ventral
margin; the ridge merges into the marginal carina on umbonal region.
Remarlls:-Three imperfect specimens(KE 2783-2785) were collected from the
Fukaushi Sandstone at Omagari of Tomiuchi, Hokkaido. The locality is probably
identical with the locality by NAGAO andOTATUME (1938), where "Trigonia subovalis
var. minor" was described by them.
Apiotrigonia crassoradiata NAKANO is
known from the Izumi Group (NAKANO,
1957; NODA and TASHIRO, 1972) and theUpper Himenoura Subgroup (TASHIRO andNODA, 1972; TASHIRO, 1976). The Izumi
and Himenoura specimens are characterized by the smooth area, the broad andstrong subradial costae on the posterior
half of the disk (posterior series) and thelarge size for Apiotrigonia. The subradial
costae are sometimes bi- or trifurcatednear the ventral margin in some adultspecimens. The arrangement of the costae
of anterior series is considerably variablein the adult stage as shown in Text-fig.

Text-fig. 3: Apiotrigonia crassoradiata NAKA]\;O, scale: 1 cm. This is illustrated
chiefly on the basis of the specimens from the Izumi Group at Himezuka of Dogo.
Matsuyama City, Ehime Prefecture.

697. T wo New Species of A1Jiotr'igonia and Senis

429

Figures show ing th e va r iabl e ornam e n tat ions o n the disk of A/Jiolrigo71 ia
from th e Ii a Me mber (Middl e Ca mpani an ) of t he U pper Himenoura
Subg r oup at Fukki r e · ura of S himo k oshik i·jima island, Kag oshima Pr e fec ture. scale 1 C Ill oT e x t ·fig . 4 :crassorad iala

NAKA'.;O ,4. The specimen f ro m the Fukaushi
Sa ndstone (pI. 1, fig. 5) is sma ll in s ize
a nd does not possess s uch bi- or trifurcateds ubradial costae on the disk. This is,hovvever, undoubted ly identified withA/)iotrigonia crassoradi ata N AKANO by t hesmooth area and t he broad and strong
costae of t he poster ior series. Trigonia
subovalis var. minor by NA GAO and OTATUME (1 938, pI. 1, fig. 8) from the Fukau shi Sa nd stone is probabl y anot her exampleof thi s species.

Comp arison :-Apiotrigonia crassoradiate
NAKANO is easil y di sting uish able from
AjJiotrigonia minor (Y ABE and NAGAO)(1928; YEHARA, 1915) f rom t he Gy liakianof the Mid dle Yezo Group of Hokkaido ,by the smooth a rea a nd broade r andstronger subradia l costae of the posteriorseri es.
Apiotrigonia obsoleta NA KA NO,
1957 (see a lso T ASHlRO, 1972) from theIzumi Group of S hiko ku a nd the Lo wer
Him enoura Subg roup of Kyushu, a nd
Apiolrigonia hetonaiana sp. nov. are simil arto this spec ies in hav ing a smooth a rea.
A/). obso/el a, ho weve r, differs from t hi s
spec ies in t he sma ll e r s hell size , less numerous subradia l costae of th e posterior
ser ies and nearl y effaced costae of t heanter io r se ri es. The distinction between
Ap. hetol1 aia na sp. no v. an d this species
was mention ed a lread y. Columbitrigonia
jaclwssel1sis PO ULTON (1977) and T rigonia
condol1i P ACK ARD (192 1) both from the
Lo wer Cre taceous of No rth A m er ica, resemble this species in hav ing strong costaeof the posterior series and a smooth area.
T he American spec ies, however, differ

Masayuki TASHIRO

430. .. -....

,
,

,
,

--

Text-fig. 5: The resemblance of irregularly waved costae of the anterior series
and the bi- or trifurcated costae of the posterior series, between Heterotrigonia subovalis(jr:-mo) (A) and Apiotrigonia crassoradiata NAKA""O (8).
(A) is restored on the basis of a specimen from the Middle Yezo Group at Iku·
shunbetsu of Hokkaido, and (8) is from the Upper Himenoura Subgroup at Shimokoshikijima island of Kagoshima Prefecture (See Text-fig. 4). scale 1 cm.

from this species in the broad and obliquecostae on the anterior half of the disk.
Heterotrigonia subovalis (jIMBO) (NAKANO,
1957, 1961) resembles this species in having variably arranged costae of the anterior series, bi- or trifurcated subradial
costae of the posterior series and thelarge size of the valve, but the former
differs from the latter in having distinct
radial costellae on the area. If the area
were broken off it might be difficult todiscriminate whether the specimen belongs
to Ap. crassoradiata or Het. subovalis (seeText-fig. 5).
Occurrence :-Greenish gray sandstoneof the Fukaushi Sandstone of the Hakobuchi Group at Omagari of Tomiuchi,
Iburi District, Hokkaido : Lower Campanian(lower Hetonaian), Inoceramus o7ientalis
orientalis Zone.
Family Cultellidae DAVIES, 1935
Genus Senis STEPHENSON, 1953
Senis japonica, sp. nov.
Plate 54, Figs. 6-10, Text-fig. 6

Afaterial:- The holotype (KE 2786) is aleft valve collected at Panketosanosawa
of Tomiuchi (Hetonai), Hokkaido. The

paratypes (KE 2787-KE 2788) are externalmoulds. A para type (KE 2789) is an internal mould of right valve. The otherparatype (KE 2790) is a left valve. All
the paratypes were collected at the same
locality as the holotype.
Description :-Shell elongate-ovate, weakly inflated; test thin; antero-dorsal margin
straight or slightly convex, occupied about
a half length of valve; anterior marginrounded or somewhat truncated on upperside; ventral margin very long. weakly
arched; posterior margin subtruncated, alittle oblique to posterior, nearly straight;
postero-dorsal margin short, nearly straight,
occupying about one-third of length ofvalve; umbo small, improminent, situatedat about four-sevens of length from frontof valve; a bluntly elevated ridge extends
from umbo to antero-dorsal margin; posterior carina weak, not angulated, extends
from umbo to postero-ventral margin;ligament external, narrowly elongatedalong postero-dorsal margin, from umbo
to a mid-point of the margin; lunule andescutcheon indistinct; posterior area triangular, nearly flat; surface smooth except for fine growth line which are somewhat crowded near ventral margin; hingearea smooth without teeth; nymph elongated below antero- and postero-dorsal

697.

Two New Species of Apiotrigonia and Senis

431

Text-fig. 6: Senis japonica, sp. nov.
A: external view of left val\"e, 8: internal view of right ,-al\-e. scale 1 cm.

margins, occupying about two-thirds ofvalve length; nymph on posterior margin
is shorter but wider than on anterior;pallial line and pallial sinus indistinct;
posterior adductor scar small, weakly
prominent under postero-dorsal margin;
anterior adductor scar indistinct; inner
margin smooth.
Measurements (in mm):Length Height Thick·ness
KE 2786, 1. v.
68.8
25.6
5.4
KE 2790, 1. v.
51. 2
18.7
2.5
KE 2787, 1. ext. mol. 68.0+ 28.0
3.0
KE 2788, r. ext. mol. 55.4+ 22.9
4.3
KE 2789, r. int. mol. 64.9+ 23.5
SpecimenObservation and Remarks:-This species
is rather uniform in outline. It is characterized by the posterior location of theumbo and the edentulous hinge. It resembles the species belonging to the genera
Phaxas, siliqua and Leptosolen in theelongatedly ovate outline, but differs fromthem in lacking hinge tooth. Some speciesof the genus Gari and allied genera of
the Psammobiinae show similarly elongated outline. but the present species
differs from them in the not angulated
posterior carina and undeveloped hinge
tooth. The present new species probably
belongs to the genus senis in view of theedentulous hinge structure and the elongated valve.
Comparison :-senis elongatus STEPHENSON (1953) from the Woodbine Formationof North America. is the only comparable
species because no other species has beenreferred to Sen is. This species can bediscriminated from senis elongatus by themore posteriorly located umbo and the
not angulated outline.
Occurrence :-Greenish gray sandstoneor siltstone of the upper part of the Fukaushi Sandstone of the Hakobuchi Groupat Panketosanosawa of Tomiuchi. Iburi
District, Hokkaido: Maestrichtian (Upper
Hetonaian), Inoceramus hetonaianus Zone.

Masayuki TASHIRO

432

Repository
The specimens described in this paper
are preserved in the Faculty of Education,
Kumamoto University (Kumamoto 860).

References cited
Cox, L. R. (1952): Notes on the Trigoniidae,
with outlines of a classification of thefamily. Malacol. Soc. London. Proc., vol.
29, p. 45-70, DIs. 3-4.
HAYANII, I. (1975): A systematic survey of
the !vlesozoic Bivalvia from japan. Univ.
Mus., Univ. Tokyo, Bull., no. 10, 249 pp.,
10 pIs.
KANIE, Y. (1966): The Cretaceous deposits
in the Urakawa district, Hokkaido. Jour.
Ceol. Soc. Japan, vol. 72, no. 7, p. 315328 (in japanese).
LIVEROVSKAJA, E. V. (1959) : Upper Cretaceous
stratigraphical Faunas of the Eastern
coast of Penzhinskoja bay. Paleontologicheskij Sbornik, (1960), no. 2, p. 231-261,
6 pIs.
MAEDA, S. and KA\\-ABE, T. (1966): Apiotri-

gonia from the Futaba Group in the loban
District, North japan. Prof. H. Shibata
Memorial Volume, p. 420-425, pI. 1, Table
1.
Jl.L-\TSDIOTO, T. (1959): Zonation of theUpper Cretaceous in japan. Mem. Fac.
Sci., Kyushu Univ., ser. D, vol. 9, no. 2,
p. 55-93, pIs. 6-11.
NAGAO, T. and OTATUNIE, K. (1938): Molluscan fossils of the Hakobuchi Sandstoneof Hokkaido. Jour. Fac. Sci., Hokkaido
Imp. Univ., ser. 4, vol. 4, nos. 1-2, p. 3156, pIs. 1-4.
N AKA:"O, M. (1957): On the Cretaceous Pen·natae trigonians in japan. Japan. Jour.
Ceol. Cevgr., vol. 28, nos. 1-3, p. 107-120,
pIs. 8-9.
- - (1960): Stratigraphic occurrences of theCretaceous trigoniids in the japaneseislands and their faunal significance,-.
Jour. Sci. Hiroshima Univ., ser. C, vol. : •no. 2, p. 215-280, pIs. 23-30.
- - (1961): Notes on Heterotrigonia subovali(JI~IBO). Trans. Proc. Palaeont. Soc. Japau,
N. S., no. 42, p. 55-62, pI. 9.
NODA, M. and TASHIRO, M. (1973): The
fauna from Dogo·Himezuka, Matsuyama
City and its stratigraphic significance.

Explanation of Plate 54
Apiotrigonia hetonaiana sp. nov.
Fig. 1. Left valve, holotype (KE 2776), Loc. Panketosanosawa of Tomiuchi, Iburi District,
Hokkaido; 1a: lateral view, xL 1b: dorsal view, xL 1c: umbonal view, showing
subinternal radial striations, xL
Fig. 2. Internal mould of right valve, paratype (KE 2777), xl, Loc. ditto.
Fig. 3. Immature stage of left valve, paratype (KE 2779), x 3, Loc. ditto.
Fig. 4. Right valve, paratype (KE 2780), Loc. Chinomigawa of Urakawa, Hidaka District,
Hokkaido; 4a: plaster cast of external mould, xL 4b: internal mould, xL
Apiotrigonia crassoradiata NAKANO
Fig. 5. Gum cast of imperfect external mould (KE 2783), xl, Loc. Omagari of Tomiuchi, Iburi
District, Hokkaido.
Senis japonica sp. nov.
Fig. 6. Left valve, holotype (KE 2786), xl, Loc. Panketosanosawa of Tomiuchi, Iburi District,
Hokkaido.
Fig. 7. Left valve, paratype (KE 2790), xl, Loc. ditto.
Fig. 8. Gum cast of left external mould, paratype (KE 2787), xl, Loc. ditto.
Fig. 9. Internal mould of right valve, paratype (KE 2789), xl, Loc. ditto.
Fig. 10. Gum cast of external mould, imperfect right valve, paratype (KE 2788), xl, Loc.
ditto.

TASHI RO:

Cretaceous bivalves from Hokkaido

Hate 54

lb
3

6

4b r:

9

"

.... . . .

5

/

,

"

/

I

/

/

,

7

.
,-

,
,,

10

697.

Two New Species of Apiot?·igonia and Senis

jour. Ceol. Soc. japan, vol. 79, no. 7, p.
493-495. (in japanese).
PACKARD, E. L. (1921): The Trigoniae fromthe Pacific Coast of North America; Univ.
Oregon Publ., vol. 1, no. 9, p. 3--35, pis.
I-II.
POULTO,\" T. P. (1977): Early Cretaceous
trigoniid bivalves of Manning Provincial
Park, southwestern British Columbia.
Ceol. Surv. Canada, Pap., 76-9, 25 pp.,3
pis.
SKWARKO, S. K. (1969): Aptian (Lower Cretaceous) 'Apiotrigonia' from the Melligo
Quartzite, Dampier Peninsula, Western
Australia.
Bur. Min. Res., Ceol. Ceophysics, Australia, Bull. lOB, p. 227-234,
1 pI.
STEPHENSON, L. W. (1952): Larger invertebrate fossils of the Woodbine Formation(Cenomanian) of Texas. U. S. Ceol. Surv.,
Prof. Pap., no. 242, p. 1-226, pis. 8-59.
TASHIRO, M. (1972): On the surface orna-433

mentation of the Pennatae trigoniids, andon three new species of the trigoniids
from the Himenoura Group, Kyushu,
Japan. Trans. Proc. Palaeont. Soc. japan,
N. S., no. 86, p. 325-339, pis. 40-4I.
--- (1976): Bivalve faunas of the Cretaceous
Himenoura Group in Kyushu. Palaeont.
Soc. japan, Spec. Pap., no. 19, 102 pp. 12
pis.
- - and NODA, M. (1973): The geologicalage of the "Himenoura Group", Kyushu,
japan. jour. Ceol. Soc. japan, vol. 79,
no. 7, p. 465-480, pl. 1, (in japanese).
YABE, H. and NAGAO, T. (1928): Cretaceous
fossils from Hokkaido, Annelida, Gastropoda and Lamellibranchiata. Sci. Rept.
Tohoku Imp. Univ., ser. 2, vol. 9, no. 3,
p. 77-96, pis. 16-17.
YEHARA, S. (1915): The Cretaceous trigoniae
from Miyako and Hokkaido. Sci. Rept.
Tohoku Imp. Univ., ser. 2, vol. 2, no. 2,
p. 35-44, 2 pis.

Hetonai :Ill','I;;I;!,],
Hidaka 13 rl'~j,Iburi Iill.JM,
Chinomigawa nifJII,
Panketosanosawa /{ '/'T r -tf"O)iR,
Tomiuchi ~Ji'I,
Urakawa lfliiPJ

Omagari *~ll,

Apiotrigonia c Senis 0) 2 f?Tflll:
iiIliJHllill'f.!:: :j1LifJII Ii J: fJ i£ L, :to)lr.!d-tlt, 7J'//{ =-7 '/ l:ffi)iI'i?'" A r Y I:: ,/7 '/l",:60 o *:filHt, :I'o:tG < Apiotrigonia crassoradiata
NAKANO iI'GEl3*Lt.:{'O)c}jl;U?n0 0 t;::I'o, Ap. crassoradiata 't, 1LHI~~~l'U7J '//{ =-7 ,/rf,'Ilil'Gcpffi)I:.t±lm L, "f@], ::jtiW~O) 7J '//{ =-7 '/Tffi) (i$iVl111i~) I:' {,i£t±lil~/!t~~nt.:o f?Tfi Senis japonica~ sp. nov. 'tiillVHlIi~O)l:{f[1 ('" A r Y I:: '/7 '/) iI'Gi£-r::jtiW~J1ltl:{f[IBiJli:* J: I) i£-r 0=.t!<:J't~OO Apiotrigonia hetonaiana sp. nov. It,~o ~~, *.K.-r0.0)~t±l~, *~O)BiJli:*-c~=0).~~ftW-C,:60o

E8 {-t :IE

z

434

PROCEEDINGS OF THE PALAEONTOLOGICALSOCIETY OF JAPAN

13 *i11=.4m~f<~ 122 @li1ij~lt 1978~f.lO JJ 11113(±) 1::'11J7fj:k~.f.lIl.~$I::':to\,'-C OO{tli~nt.: @!In~~*c.i1:§VtIil~74~)

Basic morphology and chemical compositionof tetragonitid ammonite jaws in comparison with those of living cephalopods,
Part 1. Fundamental morphology ..... .
.. KANIE, Y., TAl':AllE, K. and FUKUDA, Y.
Part 2. Microstructure and chemical composition .. , ..... FUKUDA, Y. and KANIE, Y.
Taxonomic study of jaw morphology insome Upper Cretaceous ammonites fromJapan and Sakhalin ........ TANABE, K.,
KANIE, Y., HIRAl':O, H. and OBATA, I.
The jaw morphology of ammonites and its
ecological implications .... LEII1vIAl':l':, V.,
FUKUDA, Y., OBATA, I., KANIE, Y., HIllANO, H. and TANABE, K .
A new gaudryceratine ammonite from theCretaceous of Eastern Hokkaido ....... .
........ MATSUMOTO, T. and YOSHIDA, S.

@

A

~

;)it

m•• ~AKl~.~·*~~~~ft~~K~...................... ~w.:{r5'&l....... .
· . . . . . . . . . . . . . . . . . . . . . . . . . . . .. cj:tiiti1$i'XflB\"-cO)n~)ill)~x**,1cj:t1illEi!lII*0):JJ!dJx.!i1.1WJtI::'~\"-C

Cryptocephalic and cryptothoracic Nassellaria from the Shimanto Group (Part 2)· ....... NISIII~'IURA, A. and NAKASEKO, K.
"OST" C iflH!:10) sterraster - ffi~~i!€iMMlo)-{fo\lf*I::'~\"-C.................... 1~_Hft~

Phosterophora, a new genus of the planktonic
foraminiferal family Candeinidae ....... .
................................ SAITO, T.
Late Miocene and early Pliocene planktonic
foraminifera from the northwestern corner of Hokkaido ....................... .
· ........... SAITO, T. and THOMPSON, P. R.
On Acervoschwagerina from the Yoganeyama
Limestone, Gifu Prefecture, Japan ..... .
· ............................. SASHIDA, K.

£%Lillil' !±liJf[~O)tJj~.!i1.1=.liIlfcfl;Jf\:~fiij 'H*Jt~;f',}Jj:!.!i1.fifl4'r&:iI· G.7,..t.: "~iJ..j7 ,,- T" 0)4'!f~l1:
I::'~\' '-C .......................... 'l';t"'Jt~Some Upper Paleozoic corals from Turkey................................. . KATO, M.
Marine bivalves from the Upper-most Formation of the Upper Himenoura Subgroupin Kyushu, Japan ...................... ..
· ............. TASHIRO, M. and OTUKA, M.
*:l!IJ:'ilflEiTIE*O) Nanonavis ~n::.~\',-c ....

........................ rni\:lE;L.· W*WJEt=- 7 :/ ii, G i!€!±l L t.: 1 / -t '7 A 7-.
O)~fil::'~\"-C ........ !lffEEI~Z' tt*:fd1:~lifg~tiiiJ)hl 7- =- p

A catalogue of species and subspecies of
the Glycymerididae from Japan and its
adjacent areas ............ MATSUKUMA, A.
Geloina 0) ilEWIiI* (cj:tjTt!!:) I::':tovt ~ '7 : / p' p
- 7';ffO)fj':tE .......... Ill!lff;JHf& • *~\}II W.::::(li'JIlialY,\!j!u EJ!:tl':l1iCF) I::':tovt~.... il!z:§{IDz • :fflj]iI~fAl~ {1::15 0) i!€;J7\ c i11=.1l.~

r I::'~\"-C ....
. ............. t'l;;J.:xtfUI '1iIT1Bl~1~' W1t:j{~~15Wl1£~7J--H*j£7 :/-'£:-T1

Lower Carboniferous brachiopods from the
Odaira Formation in the Kitakami Mountains ...... TAzA\\·A, J. and KATAYAMA, T.
Ostracodes from the Yabeina Zone of the
Akasaka Limestone, Gifu Prefecture, Central Japan ........ ADACHI, S. and lGo, Hy .
A preliminary note on ostracodes from theAnanai Formation, Shikoku .... ISHIZAKI, K.
Ontogenetical investigation of surface features and normal pores in Spinileberis
quadriaculeata (Ostracoda) by means of
SEM ................................... .
.. IKEYA, N., NISHII, K. and NIITSUMA, N.
SUE 1iIcj:t I::':n ? v:n- =- H 0) fr-tE L -C \, ,t.: l'iTiilil1:

v::''':)\''-C .......................... :mirn7!f1=.
13*&~~J:m~1=.wcj:tO) • • ~.~15, ~O)l---l::::§IiI- .................... tlllft1fl:1t:'ffi~l1£:fliI(O)l':E.1fl1f C IfIlfJ:O) r~9Jill,¢.i.I::.":)\,'-C.... , ..... , ......... , .. .. .. .. .. ... 'J'7'R"Coscinodiscus yabei" P'/t.- - 7' O)m'i"~E5t;{jJv::' ~*435\"L (j])!,.- 7 >I")!,.- =- 7~ DSDP 173 :i1!!.#,) ....
. . . . . . . . . . . . . . . . . . . . . . .. 'HR. ~. i:tH/!-1W"Coscinodiscus yabei" f/)!,.- - :i O)fIlf~7.t;(fH~"?
\"L (j])!,.-7>1")!,.-=-7, =-,,--:t<-r c~~-¥~) ................... i:t*"t/!-}W •

'NR.

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~t#H!:;R~t~~:::::*i£: denticulid 71li=~~

Jnoueia 7Jl..rJ. Hayashia ........... .IJ'H:j.1f*JIU~~O)iIIDi~tJt~1tT:i.... flSB35l:'.AA • *1tEE!

J}]

On some interesting calcareous nannoplankton species in the Pacific ...... NISHIDA, S.

IlII::J ~*~i£::::::~*cO)~~ (? ->t ~ .... ~) c -to)jji[
1tt~"?\"L ............ ~r..9-!Jj • P:I~ilJl!*flf>

tf:1J[~~i£:*f1tT:it~"?\"L'FJ&~1l!i!lo/.J~t~i£:!±I L t-:.. llIli1t;]-*ifi~· ~B3~~

Nilssonia schaumbur-

gensis t~"?\"L .................... t~Pi§*~
Cuticular studies on the late Cretaceous
plants in Japan, Part 1 ................ .
.............. KIMURA, T. and OHANA, T.

• il~~:i1!!JtJtiiiXlH.i<O)fFJj\n~"?\"
L (q:,r..9¥1i,*): il~!fW~~£fiJtftikJ3 ~ ..... .
.......................... ~ W' B3tR*ifi~ =- A.f,j;:~ilIl(ll.HillIHrnf.lt$ (m1-1:;A.t~1qj 1.:) ...•.................•....••••...... 1/i1J;j:;j;/li:Z$m{-I:;A.:fi7*)EJ:0)~llSIc ~ =-A.1* .... I/i1JH;/li:z!VJ~U:IlI:i1!!q:,SYSTEMATIC INDEX(New Series No. 105-No. 112)

PALAEOZOOLOGY
Protozoa
Page
IGo, Hisayoshi and IGo, Hisaharu: Upper Permian fusulinaceans contained in the pebbles of the basal conglomerate of the Adoyama Formation, Kuzu, Tochigi Prefecture,
Japan ................................................................................
KOBAYASHI, Fumio: Some considerations on the ancestor of the family Verbeekinidae(Fusulinacea) ....................................................................... .
KONDA, Isao, MATSUOKA, Kazumi, NISIlIMURA, Akira and OI-INO, Terufumi, Nummulites
boninehsis HANZA \VA from the Amami Plateau in the northern margin of the Philippine
Sea

89
1

61

Coelenterata
OKUDA, Hisashi and YA~IAGI\vA, Nobuo: Triassic corals from Mt. Daifugen, Nara Prefecture, Southwest Japan .................. , ................. , ......... , ............. ,.

297

Mollusca
HAYAMI, Itaru, MAEDA, Shiro and FULLER, Carlos Ruiz: Some Late Triassic Bivalvia and
Gastropoda from the Domeyko Range of north Chile ......................•... , . . . . ...
- - - - and NODA, Masayuki: Notes on the morphology of Neithea (Cretaceous pectinids)with taxonomic revision of Japanese species..........................................
HIRANO, Hiromichi: Phenotypic substitution of Gaudryceras (a Cretaceous ammonite)- - - - , MIKAMI, Takahiko and MIYAGAWA, Hideki: Lower Jurassic ammonites from the
Higuchi Group, Southwest Japan .......... , ....................................... , .•.
----,. and SANO, Hiroyoshi: Middle Jurassic ammonites from Bisho, Kumamoto Prefecture, Kyushu..........................................................................
IWASAKI, Yasuhide and ONO, Susumu: A molluscan assemblage of the Setogawa Group..
KOBAYASI-II, Teiichi: Manchuroceras found in South Korea with notes on tl:e Manchuroceratidae and the M anchuroceras province ............................................
- - - - : An occurrence of Ordosoceras in Jehol, northeast China, and a note on the Polydesmiidae. . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
- - - - : Discoactinoceras and the Discoactinoceratidae, fam. nov. ......................
MATSUMOTO, Tatsuro and HARAGUCHI, Yoshimitsu: A new Texanitine ammonite from
Hokkaido (Studies of Cretaceous ammonites from Hokkaido and Saghalien-XXXIV)..
- - - - and MURAMOTO, Kikuwo: Further notes on Vascoceratid ammonites from Hokkaido (Studies of the Cretaceous ammonites from Hokkaido and Saghalien-XXXIV)..
OTSUKA, Masao: A new species of Bankia in Paleogene fossil wood, Amakusa, Kumamoto
Pref., Japan ..........................................................................

436

202
27
235
410
100
106
17
125
223
306
280
417

Systematic Index

437

SIlUTO, Tsugio: On the genera Siphonofusus and Ellthria of the Indo-vVest Pacific .... 358
TASHIRo, Masayuki: On some interesting bivalves from the Himenoura Group in Kyushu 319- - - : New species of Apiotrigonia and Senis from the Uppermost Cretaceous of Hok·kaido. .. .... .. .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ... 424
YANG, Seong Young: Ontogenetic variation of Trigoniaides (s. s.) paucisulcatlls (Cretaceous
non-marine Bivalvia) . .. .. .. .. .. .. .. .. .. .. .. .. .... .. .. .. .... .. .. .. .. .. .. .. .... .. .. .. ... 333

Arthropoda
Hu, Chung-Hung: Ontogenies of four Upper Cambrian trilobites from the Bonneterre
Dolomite, Missouri....................................................................
YAJI~IA, Michiko: Quaternary ostracodes from Kisarazu near Tokyo....................
YAMAGUCHI, Toshiyuki: Taxonomic studies on some fossil and recent japanese Balanoidea(Part 1) ..............................................................................
- - - - : Taxonomic studies on some fossil and recent japanese Balanoidea (Part 2) . ...

348
371
135
161

PALAEOBOTANY
KEvIlJRA, Tatsuaki and SEKIDO, Sinji: Addition to the I\Iesozoic plants from the Akaiwa
Formation (Upper Neocomian), the Itoshiro Group, central Honshu, Inner Zone ofjapan ................................................................................ 259
T AKAIIASHI, Kiyoshi: Palynology of the Lower Tertiary Concepcion Formation, central
Chile..................................................................................
71

438

INDEX OF FAMILIES, GENERA AND SPECIES
Notes: Words listed are names of families, genera and species, which are either described
or illustrated in the articles in Transactions and Proceedings of the Palaeontological Societyof Japan, New Series, Nos. lO5-112. Words in bold-faced type are names of newly proposed
taxa.

A

Actinocythereis kisarazuensis .... 399, pI. 49
Adiantopteria ............................ 265
Adiantopteris sewardii .......... 265, pl. 36, 37
Adiantopteris toyoraensis .......... 267, pI. 36
Ambostracon ikeyai ... ......... 394, pI. 49,50
Antiquilima atacamellsis ........ 211, pI. 28
Apiotrigonia !tetonaialla ... ....... 424, pI. 54
Aretobaiera? sp ................... 274, pI. 38
Arieticeras sp ..................... 414, pl.51
Atreta illtulaevis ................ 322, pI. 44

B
Balanus albicostatus
176, pI. 19, 20, 21, 22
Balanus amphitrite .......... 174, pI.19,20,21
Balanus erenatus .................. 182, pI. 25
Balanus kondakovi ........ 176, p1.19, 20, 21, 22
Balanus retieulatus ..... ... 176,pI.19,20,21,22
Balanus rostratus .................. 178, pI. 23
Balanus trigonus ...................... pI. 24
Bankia .................................. 418
Hallkia (s.l.) amakusensis .... 419, pI. 52, 53
Braehidontes (Hormo71l)'a) sp ....... 116, pI. 16
Buecinulum . ............................. 358
Buntonia hanaii .................. 401, pI. 50
Butefia ............. " ................... 273
Butefia? sp.
273

Crassatilla (Chattonia) sp ........... 119, pI. 16
Cytheroma? !tanaii .............. 404, pI. 50

D
Dacrydiumites d. jlorinii ............ 78, pI. 10
Dieolpopollis sp ..................... 80, pI. 12
Dietyozamites . ........................... 270
Dietyoza71lites dr. obliquus ........ 271, pI. 38
Discoaetinoeeras . ......................... 224
Discoaetinoeeaas multiplexum ...... 226, pI. 31
Discoaetinoceras d. multiplexum .... 228, pI. 32
Discoactinoceras okdollgense .... 229, pI. 32
Discoactinoceratidae .................... 223
Dunbarula suzukii .................. 94, pI. 13

E
Elatocladus sp. C .................. 275, pI. 38
Elatocladus sp. D .................. 275, pI. 38
E11larginula lokllya11lai .......... 112, pI. 16
Eopeeten sp. . ..................... 209, pI. 28
Ephedripites sp ..................... 79, pI. 10
Euthria . ................................. 358
Euthria bantamensis .................... 366
Euthl'ia djodjocartae .................... 366
Euthria madurellsis ...................... 366
Euthria overmanallae .................... 366
Euthria tesehi .......................... 366

FC
Cadella sp .................. " ..... 119, pI. 16
Cado71lites sp ....................... 101, pI. 15
Callistoeythere sp ................... 393, pI. 49
Canavaria sp ... , ............ " ., ... 414, pI. 51
Carpolithes sp. . ................... 276, pI. 36
Chartronella pacifica .............. 218, pI. 30
Chla71lYs (s.l.) tamurai .................. 319
Chlamys (s.l.) ta11lurai im11lodesta 320, pI. 43
Conzucoquimba tosaensis ............ 395, pI. 49

Fagesia . ................................. 281
Fagesia japollica ................ 283, pI. 39
Fagesia spheroidal is . ............... 282, pI. 39
Fontanellieeras d. jOlltanellellse .... 412, pI. 51
Foueotrico[porites fot·eo/atlis . ..... 81, pI. 12
G

Gaudryeeras ............................ 235
Gaudryceras denseplicatum .............. 235
Gaudryeeras denseplicatu11l yar.

Index of Families, Genem and Species
denseplicatum ................ 235, pI. 33, 34
Gaudryceras denseplicatum var.
intermedium .................. 235, pI. 33, 35
Gaudryceras denseplicatum var.
tenuiliratum . ..................... 235, pI. 33
Ginkgoites .............................. 274
Ginkgoites paradiantoides .......... 274, pI. 38
Gleicheniidites circinidites ...•. ....... 77, pI. 9
Gleicheniidites specio8us . ........... 76, pI. 9
Gleichenites nipponensis ........ 261, pI. 37, 38
Gleichenites porsildii .............. 262, pI. 37
G ryphaea .......................... 212, pI. 29

439

Mitra (Tiara) sp ................... 115, pl.16
Modiolus sp ....................... 20'S, pl. 28
Momipites sp ....................... 82, pl.12
MOllocolpopollenites d. kyushuensis .. 79, pI. 10
Montlivaltia norica ominensis .... 300, pI. 40
Alontlivaltia sp ..................... 301, pI. 40
Montlivaltia sp. aff.
M. stylophylloides ... ............. 301, pI. 40
Myophorigonia sp. aff.
M. paucicostata .................. 213, pI. 29
Myrtaceidites parvus forma anesus .. 82, pI. 12
Myrtaceidites parvus forma nesus .. 82, pI. 12
Myrtaceidites sp ..................... 83, pI. 12

H

Hemiconus sp. . ................... 116, pI. 16
Holcacephalus tenurus ....... ....... 355, pI. 48
I

Inaperturopollenites laevigatus ...... 78, pl.l0
Inaperturopollenites pseudodubius ........ 78
I sastrea sp ......................... 304, pI. 41
Isastrea sp. aff. I. major .......... 304,p1.41
I sopristes sp •...................... 217, pI. 29

L
Laevigatosporites dehiscens .......... 78, pI. 10
Laevigatosporites ovulatus ........ 77, pI. 10
Leiotriletes microadriennis .......... 75, pI. 10
Leiotriletes minus .................... 74, pI. 9
Liliacidites variegatus .............. 80, pl.12
Lima (Plicacesta) sameshimai ...... 117, pI. 16
Lixollria nipponica .............. 400, pI. 50

MManchuroceras .......................... 20
Manchuroceras hanense ............ 24, pI. 3
Manchuroceras kobayashii ............ 23, pI. 4
Manchuroceras d. platyventrwn ...... 22, pI. 3
Manchuroceras? sp ................... 24, pI. 3
Manchuroceras tenllise ............ 23, pI. 4
Manchuroceratidae . .. .. .. .. .. .. .. .. .. ... 19
Megabalanus rosa .................. 184, pI. 26
Megabalanus volcano .............. 187, pI. 26
Meitanoceras subglobosus ................ pI. 18
Meitanoceratidae ........................ 130
Meteoraspis globosa ................ 351, pI. 48"Minolia" ikebei .................... 114, pI. 16
Misellina claudiae .................... 16, pI. 2
Misellina dyhrenfurthi .............. 16, pI. 2
A1isellina sp. A ...................... 16, pI. 2

NNankinella kuzuensis. . . . . . . . . . . . .. 93, pI. 13
Neithea. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ... 29
Neithea (Neithea) aketoensis ............ 38
Neithea (Neithea) alta ............ 39, pl. 5
Neithaea (Neithea) atava .......... 40, pI. 5, 6
Neithea (Neithea) ficalhoi................ 44
Neithea (Neithea) kochiensis ............ 46
Neithea (Neithea) matsumotoi............ 46
Neithea (Neitdea) nipponica.............. 47
Neithea (Neithea) llotabilis ... .. .. .. .. ... 48
Neithea (Neithea) syriaca amanoi........ 49
Nemocardium d. iwakiense ........ 118, pl.16
N ilssonia ................................ 271
Nilssonia schmidtii ................ 271, pI. 38
Nummulites boninensis .............. 64, pl. 7
Nummulites boninensis forma M .... 65, pI. 7,8
Nummulites boninensis forma S .... 65, pI. 7, 8oOrdosoceras . .......................•..... 128
Ordosoce,.as jeholense .. . . . . .. 128, pI. 17,18p

Palaeocardita peruviana ............ 214, pI. 30
Pamirina . .. .. .. .. .. .. .. .. .. .. .. .. .. .. ... 10
Pamirina darvasica .................. 14, pl. 2
Pamirina leveni .................... 11, pl. 1
Pamirina tethydis .................. 11, pI. 1
Paracytheridea bosoensis . . . . . . .. 402, pI. 50
Paradoxiella sp ..................... 94, pI. 13
Parahastites ? sp ..............•........ pI. 15
Pecten (Notovota) albicans .............. 37
Pinacophyllum? sp ................. 302, pI. 41
Pinna (Pinna) sp. . ............... 209, pI. 28
Planisphinctes(?) sp. . ............. 103, pI. 15

Nos. 105rvl12 (1977"-'1978)

440

Planospirina sp. . ................. 217, pI. 30
Plicatula sp .................
210, pl. 28
Polydesmiidae ............. o............ 126
Polydesmia ..................
127
Procyclolites? sp ................... 303, pI. 41
Pseudolimea chongi ............. 210, pI. 28
Pseudopsammocythere tokyoensis 391, pI. 50? Punctatisporites sp. . ............. 76, pI. 10
Pycnodonte amakusensis . o.
323, pI. 43, 44
0

•••••

0

•••••

0

•••

0.

Stereisporites concepcionensis . ..... 75, pI. 9
Subtriporopollenites falsus .... 84, pI. 11,12
Subtriporopollenites levius .......... 85, pI. 12
Subtriporopollenites rotundulus 84, pI. 11, 12

T

0

0"

R

Texanites ..
307
Texanites (Texanites) yazakii .. 309, pI. 42
Thamnasteria (Thamnasteria) sp. " 303, pI. 41
Thecosmilia sp. aff. To eguchii .... 302, pI. 40
Thecosmilia wasabidaniensis ... 302, pI. 40
Thyasira (Axinopsida) sp .... , .... 119, pl.16
Thyasira (7 hyasira) himedoensis 325, pI. 43
Trachyleberis sp ................. o. 398, pI. 49
Trapezium cf. jobanicum .......... 118, pI. 16
Triatriopollenites sp ................. 81, pI. 11,
Trigonioides ....................
333
Trigonioides (Kumamotoa) mifunensis .. pl. 46
Trigonioides (5.5.) paucisulcatus 341, pI. 45, 46
Triorites cf. harrisii .......... , .. '" 83, pI. 11
Tsiorites minor ...................... 83, pI. 11
Triplanosporites minor ............ 76,pl. 10
Triplanosporites sp. . ..
76, pI. 10
Triporopollenites festatus . .......... 81, pI. 11
0

00

••

00

•••••••••••••••••

0

•••••

0

Raphaeliao o.........
269
Raphaelia diamensis ............ 270, pl. 37, 38
Reichelina changhsingensis ... o...... 93, pI. 13
Rhoipites bradleyi .................. 80, p1.l2
Rhoipites sp ......................... 80, pI. 12
0

••

0

••••

0

• • '0

••••

0

••••

0

s
Schafhaeutlia americana. o..
214, pI. 29
Senis japonica . ................... 430, pI. 54
Septocardia peruviana .....
215, pI. 29
Similacipites setarius ... ............. 79, pl.12
Siphonofusus ...
358
Siphonofusus chinensis
365
Siphonofusus dentifera .................. 365
365
Siphonofusus dinglensis ......
Siphonofusus indicus ................... . 365
Siphonofusus japonicus ............... . 366
365
Sip/wnofusus kelletiifonnis ............
Siphonofusus longicanalis ..... " ......... 365
Siphonofusus lubricus .................... 365
Siphonofusus macneili ................ 366
Siphonofusus martini .................... 365
Siphonofusus oostinghi .................. 365
Siphonofusus orangensis ..
365
Siphonofusus spo ......
366
Siphonofusus lVanneri .................... 365
Solidobalanus (Hesperibalanus)
hesperius
187, pI. 27
000••••••••••••••••••••••••••••••

00•••••••••••••••••••••

0

0

0

.0

00

0.

00

•••••••••••

0u•••••••••••

0

0

0

0"

•••

Unionites sp.

.0

•••

0.

213,pl.29

v•

Vascoceras sp. aff. V. dllrandi .......... 281
Verbeekinidae .................... 0.
4w
Welleraspis missollriensis0•••••••••

352, pl.'{S•••••••••••••y••••••••••••••••••••••••••••••••••••••••

Yabeina globosa .....
pl.14
Yabeina kanmerae .................. 95, pI. 140••••••••

0•••••••••

441

Members of the Palaeontological Societyof JapanNovember 30, 1978
Patron Members ..........................
8
Honorary Members........................
7
Regular Members .......................... 320* Fellows .................................. 166• Foreign Members........................ 63
Total ...................................... 564

Abbreviations of the fields of study
Ag.
Biost.
Brach.
CCal.
Cephal.
Conod.
Foram.
Fusul.
Gg.
Gp.
Hg.
In.
M
Mg.

Applied geology
Biostratigraphy
Brachiopods
Cenozoic
Calcareous algae
Cephalopods
Conodonts
Foraminifers
Fusulinaceans
General geology
General paleontology
Historical geology
Invertebrates
Mesozoic
Marine geology

Mo.
Nannopl.
P
Paly.
Pe.
Pg.
PI.
Q
R
Radiol.
Rg.
St.
Sd.
Tg.
Ver.

Molluscs
Nannoplankton
Paleozoic
Palynology
Paleoecology
Petroleum geology
PlantsQuaternary
RecentRadiolarians
Regional geology
Stratigraphy
Sedimentology
Tectonic geology
Vertebrates

442

Patron Members
IDEMITSU EXPLORATION CO., (JAPAN
SEA) LTD., 3-12, Marunouchi, Chiyoda-ku,
Tokyo (100).
JAPAN PETROLEUM DEVELOPMENT CORPORATION, TECH. RASEARCH CENTER,
18th Mori Bldg., Nigokan, 20, Akefune-cho,Shiba-Nishikubo, Minato-ku, Tokyo (105).
JAPAN PETROLEUM EXPLORATION CO.,LTD., Otemachi Bldg., 1-6-1, Ote-machi,
Chiyoda-ku, Tokyo (100).
jAPEX INDONESIA CO., LTD., 15th Mori
Bldg., 7F, 16, Akefune-cho, Shiba-Nishikubo,

Minato-ku, Tokyo (105).
KANTO NATURAL GAS DEVELOPMENT
CO., LTD., Mitsui Bldg., 2-1-1, Muromachi,
Nihonbashi, Chuo-ku, Tokyo (103).
MITSUBISHI PETROLEUM DEVELOPMENT
CO., LTD., Nippon Bldg., 2-6-2, Ohtemachi,
Chiyoda-ku, Tokyo (100).
TEIKOKU OIL CO., LTD., 1-31-10, Hatagaya,
Shibuya-ku, Tokyo (151).
SG GIKEN CO., Chiyoda Bldg., 4504, Kengunmachi, Kumamoto (862).

Honorary Members
ASANO, Kiyoshi (i:!i;!Ilr ~) D. Sc., 41, Kinoshita, Sendai (983) Biost., C-Foram.
FUJIMOTO, Haruyoshi (~*ra~) D. Sc., 132-8, Ehara-cho, Nakano-ku, Tokyo (165)
Biost., Fusul., Corals.
HANZAWA, Shoshiro (¥-~IEggJ!lli) D. Sc.,
Inst. Geol. & Paleont. Tohoku Univ., Sendai(982) Foram.
KOBAYASHI, Teiichi (/H*j(-) D. Sc., 5-5018, Yoyogi, Shibuya-ku, Tokyo (151) Hg. P-

Cephal. Trilobites, M-Mo.
MAKIYAMA, jiro (~W(;(ftr,) D. Sc., 22, Tanaka-Haruki-cho, Sakyo-ku, Kyoto (606) CMo., C-Ver., Tg.
SHIKAMA, Tokio Ot:FI3')II;f;ic) D. Sc., 4-5-1,
Nakahara, Isogo-ku, Yokohama (235) Ver.
T AKAI, Fuyuji (j~;Jt~=) D. Sc., The Research Institute of Evolutionary Biology,
2-4-28, Kamiyoga, Setagaya-ku, Tokyo (158)Ver.

Regular Members, Fellows
and For.eign Members
ABE, Katsumi (JliiJtliSMjE) Gedl. Inst., Fac.
Sci., Univ. Tokyo, 7-3-1, Hongo, Bunkyoku, Tokyo (113) Micropaleontology.
·ACCESSIONS DEPARTMENT, NATIONALLENDING LIBRARY FOR SCIENCE ANDTECHNOLOGY, Boston Spa, Yorkshire,
ENGLANDADACHI, Shuko (~~~T) c/o Mr. Kawanaka,
1239, Saigi, Sakura-mura, Nihari-gun, Ibaraki Pref. (300-31) P-Ostracoda.
AKAGI, Saburo (iJf,*::::ftl» D. Sc., RC-1-203,
Shirahama-shukusha, 2960-77, Koyama-cho,

Tottori-shi (680) Q-Gg.
AKAI, Kozue (iJf,;Jt.:. f:kJ 8-2; Nakatomi-cho,
Sakado-shi (350-02) Foram.
AKAMATSU, Morio (iiF~<;'fMt) Hokkaido Kaitakukinenkan, Konopporo, Atsubetsu-cho,
Shiroishi-ku, Sapporo (061-01) Pe.
AKIBA, Fumio (tk~JtMt) Central TechnicalLaboratory of japan Petroleum Exploration,
3190-1, Hane, Hamura-machi, Nishitama-gun,Tokyo (190-11) C-Biost., Diatoms, Pg.
AKIMOTO, Kazumi (tk5G5fll~) 1-10-8, Eharacho, Nakano-ku, Tokyo (165)443*AKUTSU, Jun (I\PJ~JIl:MD Dr. Sc., Fac. Gen
Educ., Utsunomiya Univ., 350, Mine-machi.,
Utsunomiya (320) Diatoms.
AMANO, Kazutaka (7\:!!fflJ*=) c/o lvlr. Fujiyoshi, 100, Nakatakatsu, Tsuchiura (300)
Q-Mo.
*AMANO, Masahisa (7\:!!fI;;'I~) D. Sc., Dept.
Geol., Fac. Sci., 739, Deyama, Hotakubohon·
machi, Kumamoto (860) Mo., St.
ANDO, Hisao ('ti:.1<f93) c/o Mr. Ariga, 1-27,
Takamatsu, Toshima-ku, Tokyo (171) Biost.
AN DO, Yasuji (~.f*=) 4-15-9, Taidera,
Akashi (673) Q-Mo.
AOKI, Naoaki (w*mrllB) D. Sc., 6-24-5-607,
Maenocho, Itabashi-ku, Tokyo (174) CForam., St.
AOSHIMA, Mutsuharu (WtlIMll'E1) 1-36-15,
Yayoiso, Nishidai, Itabashi·ku, Tokyo (174)Pe., Foram.
AOY AMA, Hisatomo ('j1j'"l-U~!ij~:) Takachiho
Senior High School, Mitai, Takachiho-cho,Nishiusuki-gun, Miyazaki Pref. (882-11) Sd.
*ARAI, Juzo (~jl:ID:~) D. Sc., Dept. Geosci.,Fac. Educ., Saitama Univ., Urawa (338) Sd.
ARAKI, Hideo (m*~1<:) Kesennuma Library,
3-30, Sasanojin, Kesennuma (988) P·ln.
ARAKI, Yoshio (m*~M£) D. Sc., Earth Sci.
Dept., Fac. Liberal Arts, Mie Univ., Kamihama-cho, Tsu (514) St., Mo.
ARIKAWA, Ryuichi (1r}II~-) Inst. Geol. &Paleont., Fac. Sci., Tohoku Univ.,Aobayama,
Sendai, (980) Foram., St.
ASAGA, Masayoshi (i:Jej!l.iF~) Sakura HighSchool, 18, Nabeyama Miroku-cho, Sakura,
Chiba Pref. (285) Mo.
*ASAMA, Kazuo <rJi;r..1-~) Natn. Sci., :\1us.
Tokyo, 3-23-1, Hyakunin·cho, Shinjuku-ku,
Tokyo (160) P, M·Pl., Evolution.
ASAMI, Kiyohide (i:lt~m*) D. Sc., 445,
Higashi Terao, Tsurumi-ku, Yokohama-shi(230)
BAN, Shinsuke ({f '!P{1l') Fac. Sci., Kumamoto
Univ. Seiunso, 6-5-72, Toroku, Kumamoto(862) Gp.
*BANDO, Yuji (:lftJIHliaJ) D. Sc., Dept. Geol.,Fac. Educ., Kagawa Univ., 1-1, Saiwai-cho,Takamatsu, Kagawa (760) P, M·Cephal.
.BARKER, Reginald Wright, Ph. D., 5120,
Palmetto, BeHairs, Texas 77410, U. S. A. C,
R-Foram., St.

·BURCKLE, Lioyd, Ph. D., Lamont·Doherty
Geological Observatory of Columbia Univ.,
Palisades, New York 10964, U. S. A. Diatoms.
.BURTON, Cedric Keith, Ph. D., P. T. Kennecott, 10, Jalan Mutiara, Singapore 10,
Malaysia.
·CHANG, Li-Sho (ilfU'!fII!l.) D. Sc., 3410, Redbud
Lane, Raleigh, N. C. 27607, U. S. A. Tertiary
Foram.
*CHI]I, Manzo (f:ttB7J~) D. Sc., 10-2, Namimatsu-cho, Kishiwada (596) St., Foram.
*CHINZEI, Kiyotaka (~g§iilfj@j) D. Sc., Geol.,Inst., Fac. Sci., lTniv. Tokyo, 7-3-1, Hongo
Bunkyo-ku, Tokyo (113) Pe" Gp., CoMo.
*CHISAKA, Takeshi (fJt;[Jitii!:.) D. Sc., 3-3316, Shimoigusa, Suginami-ku, Tokyo (167)
Fusul.
·CORGAN, James Xavier, Ph. D., Dept.
Geogr. & Geol., Austin Peasy State Univ.,
Clarksville, Tennessee, U. S. A.
·DANNER, Wilbert Roosevelt, Ph. D., Dept.
Geol., Univ. British Columbia, Vancouver,
B. C., Canada. Biost., Fusul.
.DEHM, Richard, D. Sc., Inst. Palaont. &Hist. Geol., Univ. Miinchen, Wagner·Strasse,
Miinchen, Deutschland, Ver.
·DEPARTMENT OF MICROPALEONTOLOGY, AMERICAN MUSEUM OF NATURALHISTORY, Central Park West at 79th street
New York, N. Y. 10024, U. S. A .
• DOWLEN, Robert John, 730, Beryl St., San
Diego, California 92109, U. S. A. In.
.DURHAM, John Wyatt, Ph. D., Dept. Paleont.,
Univ. Calif., Berkeley, Calif. 94720, U. S. A.
C, P, Prec.- Gp., R-Mo., St., Echinoidea,
Scleractinia .
• ESSO PRODUCTION RESEARCH CO., P. O.
Box 2189, Houston, Texas 77001, U. S. A.
ETO, Tetsuto (rr.!fA.) Fac. Educ., YokohamaNat. Univ., 156, Hodogaya-ku, Yokohama(240) C-St., Sd.
ETO, Toshiharu (1tr. fa: l'E1) Lab. Earth Sci.,
Fac. Gen. Educ., Gifu Univ., 1466, Shironouchi, Nagara, Gifu (500)*FUJI, Norio (. llIJME) Inst. Geol., Fac. Educ.,
Kanazawa Univ., 1-1, Marunouchi, Kanazawa (920) Paly.
*FU]Il, Shoji (Jii:f!:lIB=) D. Sc., Dept. Geol.,
Toyama Univ., Toyama (930) C-Mo., St.
FUJISHIMA, Yasutaka (Jii~~~) Hokkaido

444Colliery & Steamship Co. Ltd., Heiwa 6,
Yubari, Hokkaido (068-04) Mo.
FUJITA, Ikuo CiliEB1i~~) Hokkaido Sunagawa
Kita High School, 95, Yakeyama, Sunagawa
City, Hokkaido (073-01) C·Biost.
*FUJIYAMA, lenori (lliUJ*~) D. Sc., Netn.
Sci. Mu. Tokyo, 3-23-1, Hyakunin·cho,
Shinjuku-ku, Tokyo (160) Fossil insect.
FUKADA, Atsuo (~EBif~) D. Sc., 1-15-15,
Honcho, Koganei (184) Cephal.
*FUKUDA, Osamu (mEB 3l!) 2-78, Honcho,
Kumagaya (360) Ag., Foram.
FUKUDA, Yoshio (mEB7J~) 1585, Yotsukaidomachi, Inba-gun, Chiba Pref. (284) Crustacea, Pe.
FURUKAWA, Takaharu (i1J11Ili~)' 5-12-1,
Tamagawa Apartment, Fukazawa, Setagayaku, Tokyo (158) Gg., Gp.
• GEOLOGICAL SURYEY INSTITUTE, P. O.
Box 1964, Teheran IRAN.
GOKAN, Masafumi (f:ltM~ft)O 3-2-2, Kishimachi, Urawa (336) Conod., Fusul.
GOTO, Hiroya (f~llilW~) Fac. Liberal Art.,
Kobe Univ., 1, Tsurukabuto, Nada-ku, Kobe
(657) P-Fusul.
GOTO, Masatoshi (f:ltllitlitJ:) Sch. Dental
Medicine, Tsurumi Univ., 2-1-3, Tsurumi,
Tsurumi-ku, Yokohama (230) Yer.
.GUYECC, T., Ph. D., Geol. Div. of MineralRes. & Expl. Inst., PK -116, Ankara, Turkey,
P-Cal.:Foram.
*HABE, Tadashige (lJl{l'lIlJit',it) D. Sc., Natn.
Sci. Mus. Tokyo, 3-23-1, Hyakunin-cho,Shinjuku-ku, Tokyo (160) R-Mo.
.HABIB, Daniel, Ph. D., Geol. Dept. Queens
ColI., Flushing, New York 11367, U. S. A.
Paly.
HADA, Shigeki (lJl{EBitml) D. Sc., Fac. Sci.,
Kochi Univ., 1000, Asakura, Kochi (780)
Tg., Hg.
HAIKA WA, Takehiko (/£JI[JEI:;~) Akiyoshidai
Sci. Mus., Shuho-cho, Mine-gun, Yamaguchi
Pref. (754-05) Fusul., Corals.
HAMADA, Jun-ichi (~EBi~-) 1823-3, Igisue,
Tonosh6-ch6, Shozu-gun, Kagawa Pref. (76142) poSt, Trilobite.
*HAMADA, Takashi (~EB[l~±) D. Sc., 2-202, Amanuma, Suginami-ku, Tokyo (167)
Corals, Brach., Trilobites.
• HAMLIN, William Henry, Atlantic Richfield,

Box 51408, Lafayette, La. 70501, U. S. A.
*HANAI, Tetsuro (1LJHyU[S) D. Sc., Geol_
Inst., Fac. Sci., Univ. Tokyo, 7-3-1, Hongo,
Bunkyo-ku, Tokyo (113) C-Ostracods.
HARA, Takuro (Jjj( .!jl.U[I) Ikumo, Ato-cho,Abu-gun, Yamaguchi Pref. (759-13) CoYer.
HARADA, Ken-ichi (Jjj( IER\r.- )275, Irahatakamicho, Kanagawa-ku, Kawasaki (221) Fossil
microplankton.
HARADA, Koji (Jjj(EBmHijii]) Kure Ryojo JuniorHigh School, 9727-1, Hiro-machi, Kure, Hiroshima (737-01)*HASE, Akira (:!!i::fr ~) D. Sc., Inst. Geol. &Miner., Fac. Sci., Hiroshima Univ., Higashisenda-machi, Hiroshima (730) St. Rg.
HASE, Kotaro (:!!i::fr5L*U~) D. Sc., Hase Geol.
Surv. Office, 3-5-8, Honcho, Sendai (980)
Gg.
HASE, Yoshitaka (:!!i::fr~Ili) Dept. Geol. Fac .
Sci., Kumamoto Univ., 2-39-1, Kurokami,
Kumamoto (860) St., PI.
HASEGAWA, Jun-ichi (:!!i::frJI[i~-) 9-18, Suehiro-cho, Sakado, Saitama Pref. (350-02)
HASEGAWA, Shiro (:!!i::frJI[ggl~f;) D. Sc., Inst.
Geol. & Paleont., Fac. Sci. Tohoku Univ.,
Aobayama, Sendai (980) C-Foram.
HASEGAWA, Yasuo (:!!i::frJI[JlIHt) D. Sc., 5-344, Higashi-honcho, Joetsu, Niigata Pref.
(943) Fossil and R-Diatoms.
*HASEGA WA, Yoshikazu (:!!i::frJI[:g;;frJ) D. Sc.,N atn. Sci. Mus., 3-23-1, Hyakunin-cho, Shinjuku-ku, Tokyo (249) Yer.
*HASEGAWA, Yoshiyuki (:!!i::frJI[~IT) D. Sc.,
Dept. Earth Sci., Fac. Gen. Educ., Niigata
U niv., 8050, Igarashi, Nino-cho, Niigata (95021) P-Foram.
*HASHIMOTO, Isamu (frl'~* ~) D. Sc., Gen.
Educ., Kyushu Univ., 4-2-1, Ropponmatsu,
Chuo-ku, Fukuoka (810) M, CoSt.
HASHIMOTO, Kyoichi
2-2, Kosobara, Bofu (747) Fusul., Corals.
*HASHIMOTO, Wataruli) D. Sc., 918,
Higashi-Oizumi-machi, Nerima-ku, Tokyo(177) St., Stromatoporoides, Larger Foram.
*HATAE, Nobuhiro(lJl{~i'I{8·J1;;) D. Sc., Daigo,
Dazaifu-machi, Tsukushi-gun, Fukuoka Pref.
(818-01) Mo.
HATT A, Akio (AEB 1jFJ~) 976, Sugao, Kisarazu(292) Foram .
HATTORI, Shuichi ()J[Hff;Mli-) c/o Mr. A.

(m*$-)(m*445
Kataoka, 3269-4, Kurihara, Sakuramura,
Niihari-gun, Ibaraki Pref. (300-31)*HAYAMI, Itaru (~* m) D. Sc., Univ. Mus.,
Univ. Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo (113) Bivalves, Evolutionary bioI.
HAYAMI, Tomoko (~*illT) D. Sc., Fac.
Ed., Ehime Univ., 3, Bunkyo-cho, Matsuyama (790) C-Bryozoa.
*HAYASAKA, Shozo (.If!-~rF'::::) D. Sc., Inst.
Earth Sci., Fac. Sci., Kagoshima Univ., 1chome, Korimoto, Kagoshima (890) C-Mo.,
Mg., St.
HAYASHI, Akira (f*~) 1-1-9, Honcho,
Kawaguchi (332) C-Foram.
HA YASHI, Shingo
fa'l\!t) 1226-4, Omamamachi, Yamada-gun, Gunma Pref. (376-01)
P, M-Conod.
HAYASHI, Tadaichi (f* Pf£-) D. Sc., Aichi
Univ. of Educ., Hirosawa, Igaya-cho, Kariya(448) Gg.
HA YASHI, Tokue (f* ~jij) Studiam ofSociety of Island. 1091, Showa-machi, Ishidamachi, Iki-gun, Nagasaki Pref. (811-52) Gg.,
Gp.
HIGUCHI, Yu (tilJ WO D. Sc., Pacific Aero
Survey Co., Ltd., 2-13-5, Higashiyama, Meguro-ku, Tokyo (153) Foram., Pg.
HIRAKAWA, Masato (fJII,l§~) 4-1-4-105,
Shakujidai, Nerima-ku, Tokyo (177) Hg.
*HIRANO, Hiromichi (fffiJI.:itl) D. Sc., Inst.
Earth Sci., School of Educ., Waseda Univ.,
Nishiwaseda, Shinjuku-ku, Tokyo (160)
Cephal.
*HIRAYAMA, Katsumi (fWIl11~) D. Sc., Lab.
Geol. Sci., St. Paul's (Rikkyo) Univ., NishiIkebukuro, Toshima-ku, Tokyo (171) CoMo.
HISAMITSU, Masao (~J'tLEM~) 65, Tomita,
Koromokawa-mura, Isawa-gun, Iwate Pref.
(029-43) Fusul;
HITAKA, Minoru (Slit ~) 170, Hoso, Sakanoshi-Kyokunai, Oita (870) Q-Gg.
HOJO, Yoshio (~t~WL1=.) D. Sc., Tobata HighSchool, 1-15-44, Wakaba-cho, Yahata-Nishiku, Kitakyushu (806) C-PI.
HONDA, Hiromi (:;j>;83j:l!jc.) Japan Petroleum
Exploration Co., Ltd., Dpt. of Exploration,
Seiwa-Ebisu Bldg. 2F, 1-18-14, Ebisu, Shibuya-ku, Tokyo (150) Pg.
HONDA, Nobuyuki (*83fa$i) Inst. Geol. Paleont., Fac. Sci., Tohoku Univ., Aobayama,(**

Sendai (980) C-Nannopl.
HONDA, Yutaka (*83 m) Inst, GeoI.
Paleont., Fac. Sci., Tohoku Univ., Aobayama, Sendai (980) CoMo.
-HONJO, Susumu (*I± liS) D. Sc., Woods
Hole Oceanogr. Inst., Woods Hole, Mass.
02543, U. S. A.
HORIGUCHI, Mankichi (#8jIJl.7tr) 519-22, Kamikizaki, Urawa (338) Cal.
*HORIKOSHI, Masuoki (#8j~~JO D. Sc.,
Ocean Res. Inst., Univ. Tokyo, 1-15-1, Minamidai, Nakano-ku, Tokyo (164) C, R-Mo.,
Marine Benthic Ecology & Biogeography.
HORIGUCHI, Toshiaki (#8jlJliiif;k) Resources
Investigation Consultant Co., Ltd., 1-28-23,
Hongo, Bunkyo-ku, Tokyo (113) Gg.
HORIUCHI, Junji (#8ji*Jlllf{ra) Dep. Astr. andEarth Sci., Tokyo Gakugei Univ., 2734, Izumi, Komae-shi, Tokyo (182) PI.
-HU, Chung-Hung (iiIl,r&"i:][) Ph. D., Dept. Earth
Sci., Taiwan Normal Univ., Taipei, Taiwan
117, Rep. of China. Hg., P, St.
-HUANG, Tun-Yow (jU.X::30 D. Sc., Office ofChief Geologist, Chinese Petrol. Corp., 83,
Chung Hwa Road, Taipei, Taiwan 100,
Republic of China. R, C-Foram;, BiosL, Pg.
*HUZIOKA, Kazuo (JWJMl-~) D. Sc., 1-105,
Shintoda-Sanjukari, Akita (010) M, C-PI.
IBARAKI, Masako (~**T) Geosci. Inst.,
Fac. Sci., Shizuoka Univ., Shizuoka (422)C-Foram., Biost:*ICHIKAWA, Koichiro (mJII~~-Jl!I;) D. Sc.,
Dept. Geosci., Fac. Sci., Osaka City Univ.,
459, Sugimoto-cho, Sumiyoshi-ku, Osaka(558) M-Mo., Radiol., Hg.
*ICHIKAWA, Wataru (mJII iJlO D. Sc., 228-12, Ishibiki-cho, Kanazawa (920) C, Rdiatoms, Silicoflagellates.
ICHIKURA j Masaki (mg'ltliD' Kamishirane
Junior High School, 868, Kamishirane-cho,Asahi-ku, Yokohama (241) C-Foram, Mg.
IGO, Hisaharu (~ms~ra) D. Sc., Dept. Astron.
& Earth Sci., Tokyo Gakugei Univ., 4-1-1,
Nukuikita-machi, Koganei, Tokyo (181) P,
M-Conod., Fusul., Cal.
*IGO, Hisayoshi (~~~~) D. Sc., Inst.
Geosci., Tsukuba Univ., Sakura-mura, Nihari-gun, Ibaraki Pref. (300-31) Coral,
Conod., Fusul.
IGUCHI, Yasuo (;tFI:Jf+:7<:) Asahikawa Coli.,

446
Hokkaido Univ. Educ., 9, Hokumoncho,
Asahikawa (070) Paly.
*IKEBE, Nobuo (il!!~~1=.) D. Sc., Dept.
Geoci., Fac. Sci., Osaka City Univ., Osaka(659) C·Biost.
IKEDA, Tadashi (il!!EB lE) Ichioka SeniorHigh School, 2-12-12, Ichiokamotomachi,
Minato·ku, Osaka (552) Foram.
*IKEYA, Noriyuki (il!!=GfilizJ D. Sc., Geosci.
Inst., Fac. Sci., Shizuoka Univ., 836, Oya,
Shizuoka (422) C, R-Foram., Gp.
IKUjI, Yukio (1=.~$1=.) Tech. Lab., japan
Petrol. Expl. Co., 108 Minami 21, Nishi 7,
Chuo-ku, Sapporo (064) Foram.
*IMAMURA, Sotoji (A,H7'I-~) 4-163-10, Takasu, Hiroshima (733) C-St.
II'vIAMURA, Tadahiko (A,H.\!;',&) Kochi Kita
High School, 160, Higashi Isitate, Kochi(781-02) M-Gg,*IMANISHI, Shigeru (A,g§ Di) D. Sc., 3-1320, Koto, Kumamoto (862) Biost.
INA, Haruyuki (fJt~~f.f) Dept. Earth Sci.,
Fac. Sci., Nagoya Univ., Furo-cho, Chikusaku, Nagoya (464) PI.
·INGAVAT, Rucha, Dept. Miner. Resources,
Rama VI Rd., Bangkok, Thailand.
INOMA, Akitoshi (~r..~~~) Dr. Sc., Exploration Dpt., jAPEX, Seiwa Ebisu Bldg., 1-1814, Ebisu, Shibuya-ku, Tokyo (150) Pg.
INOUE, Eiji (1l'J:~=) D. Sc., Geol. Surv.
japan, 8, Kawada-cho, Shinjuku-ku, Tokyo(160) Mg., Coal geol.
INOUE, Masao (1l'J:jjtx) Fac. Educ., Iwate
Univ., 3-18-33, Ueda,Morioka-shi, Iwte Pref.
(020) Sd.
INOUE, Takeshi (tt: J: !it) D. Sc., Min. Coli.,- Akita Univ., Tegatagakuen-cho, Akita (010)
C-St.
INOUE, Yoko (1l'J:i'fT) Central technicallaboratory of japan Petroleum Exploration
Co., Ltd., 3190-1, Hane-Musashino, Hamuramachi, Nishitama-gun, Tokyo (190-11) Biost.
(Foram.)·INSTITUT FUR GEOLOGIE UND PALAEONTOLOGIE DER UNIVERSITAET, Sigwartstr. 10, 74 Tlibingen, GERMANY (WEST).
·INSTITUTE OF SEDIMEMTARY ANDPETROLEUM GEOLOGY, 3303, 33rd Street,
N. W., Calgary 44, Alberta, CANADA.
·INSTITUTO DE INVESTIGACIONS GEO-LOGICAS, Cas ilia 10465, Santiago, CHILE.
*ISHIBASHI, Takeshi (;5.flfti ~) D. Sc., Dept.
Geol., Fac. Sci., Kyushu Univ. 6-10-1, Hakozaki-cho, Higashi-ku, Fukuoka (812) MCephal.
ISHIDA, Masao C5 EB lEx) Hokkaido Branch.
Geol. Surv. japan, Minami-I, Nishi-18, Sapporo (060) St.
*ISHIDA, Shiro CEiEB;t.M) D. Sc., Dept. Geol.
& Min., Fac. Sci., Kyoto Univ., Oiwake-cho,
Sakyo-ku, (606) C-St.
ISHIGURO, Yoshihito C6m.*-A) 5, Nishisakura-machi, Minami-ku, Nagoya (457) PMo.
*ISHII, Atsushi (:5;tt: A$) D. Sc., Dept.
Astron. & Earth Sci., Tokyo Gakugei Univ.,
4-1-1, Nukuikita-machi, Koganei, Tokyo(184) P-Fusul.
*ISHII, Ken-ichi (61l'M-) D. Sc., 4-12-10,
Aoyamadai, Suita (565) Fusul.
*ISHI]IMA, Wataru (6el; ii.J;;) D. Sc., 1-208, Momoi, Suginami-ku, Tokyo (167) Cal.
ISHIKAWA, Sei (6)11 lE) 706, Tsukahara,
Minamiashigara, Kanagawa Pref. (250-01)
ISHIKAWA, Tooru (6J11 4!=) c/o Mr. Katori,
2-34-9, Wakamiya, Nakano-ku, Tokyo (165)
St.
*ISHIWADA, Yasufumi (6;f1:1EBtIA':fi!:) D. Sc.,
3-5-9, Matubara, Setagaya-ku, Tokyo (156)
Pg., C-Foram.
*ISHIZAKI, Kunihiro (611ffit~~) D. Sc., Inst.
Geol. & Paleont., Fac. Sci., Tohoku Univ.,
Aobayama, Sendai (980) Ostracoda.
ISODA, Kiyoshi (~EB:S:~) 523, Motoshimanacho, Takasaki-shi, Gunma Pref. (370) Paly.
ISOMI, Hiroshi (fiftJ! it) 1-26-26, Komaba,
Meguro-ku, Tokyo (153) St., Foram.
ITO, \fakoto «(Jl-~ Jl{) 7-9-16, Shakujii-machi,
Nerima-ku, Tokyo (177) St., Gp.
*ITOIGA WA, junji (*,f.$.) IIi$=) D. Sc., Dept.
Earth Sci., Fac. Sci., Nagoyo Univ., Furocho, Chikusa-ku, Nagoya (464) C-Mo.
IWAI, jun-ichi (:€i-1l'i$-) D. Sc., 5-68, Kitasagigamori, Aramaki, Sendai (980) M,C-St.
IWAI, Takehiko (:€i-~j:~&) D. Sc., Fac. Edu.,
Hirosaki Univ., 1, Bunkyo-cho, Hirosaki(036) C-Mo., St.
IWAO, Yuushiro (:€i-li!!Jf~gg!,!~) 373-8, Honzyo,
Honzyo-machi, Saga (840) PI.
*IWASAKI, Yasuhide (:€i-i/ft,y~~'JD D., Sc., De-447
part. Geol., Fac. Sci., Kumamoto University,
2-39-1, Kurokami, Kumamoto (860) Mo.
JIMBO, Yukinori (:pH*$RIJ) Honshu Paper Co.
Ltd., 5-12-8, Ginza Chuo-ku, Tokyo (104)
Gg. CoMo.
JITSUZAKI, Goro (~JIii(JttH'lll) 426, Yayama,
Oita (870-03) Biost., Fusul.
-JORDAN, Reiner, Dr. Sc., Niedersachsisches
Landesamt fur Bodenforschung, Stilleweg 2,
3000, Hannover 51, Bundesrepubeik. MBiost., Cephal., Nannopl.
-KAHLER, Franz, Ph. D., A-9020, Klagenfurt(Austria, Europe), Linsengasse 29, Bio st.,Fusul.
KAIHO, Kunio (ifif 1Jf,: "f!l:;lc) Dept. Geol. &Paleont., Fac. Sci., Tohoku Univ., Aobayama, Sendai (980) C-Foram.
KAMADA, Hiroshi (~FRtit=t,;;) Japex Sapporo,
7 West, 21 South, Chuo-ku, Sapporo (064)
Pg.
*KAMADA, Yasuhiko (~B3~~) D. Sc., Dept.
Geol., Fac. Educ. Nagasaki Univ., 1-14,
Bunkyo-machi, Nagasaki (852) C-Mo., Mg.,
St., Sd.
*KAMBE, Nobukazu (:pflP"m-5f1l) D. Sc., Geol.
Surv. Japan, 135, Hisamoto, Takatsu-ku,
Kawasaki (213) P,M-Conod.
*KAMEI, Tadao (1t!.;lHliJ:;Ic) D. Sc., Fac. Sci.,
Kyoto Univ., Oiwake-cho, Kitashirakawa,
Sakyo-ku, Kyoto (606) Ver.
KAMEYAMA, Tokuhiko (1i!.lll~~) D. Sc.,
Fac. Lit., Kitakyushu Univ., Kitagata, Ko. kuraminami-ku, Kitakyushu (803) C-Foram.
KANAMORI, Kunio (~~"fIl:;lc) Riihuhaitsu905, 1-11-12, Chuuo, Warabi (335) Foram.
KANASUGI, Hiromi (~t~f-F~) Inst. Geosci.,
Univ. of Tsukuba, Sakura-mura, Niiharigun,
Ibaraki Pref. (300-31) Gp.
*KAN AY A, Tarou (~1.l-:t:RI~) D. Sc., 1300,
Kamihatsuishi-cho, Nikko (321) Micropaleont., Diatoms.
KANDA, Kaname (fi/IEE ~) Kawatetsu Mining Co. Ltd., 3-2-22, Harumi, Chuo-ku, Tokyo (104) C-Foram.
KANEKO, Sueo (~-T~Hftj~) 3--1-16-101, Shinkanaoka-cho, Sakai (591) Mo.
*KANIE, Yasumitsu (llli'ImtJ'[;) D. Sc., Yokosuka City Mus., 95, Fukadadai, Yokosuka(238) M-Mo.
*KANMERA, Kametoshi (WJ*Nftlllfff) D. Sc.,

Dept. Geol., Fac. Sci., Kyushu Univ., Hakozaki, Fukuoka (812) P-St., Fusul.
*KANNO, Saburo ('if!f::::RI;) D. Sc., Dept.
Geosci., Tsukuba Univ. Sakura-mura, Niihari-gun, Ibaraki Pref. (300-31) C-Mo., Biost.
KANSHA, Yoshiyuki (rI31~~$) 1-13-5, Tomioka, Koto-ku, Tokyo (135) PI.
*KANUMA, Mosaburo (JJ1Ui3lJi::::ElII) D. Sc.,
6-11-13, Kamirenjyaku, Mitaka (181) Fusul.
. -KAPOOR, Hari Mohan, Dr. Sc., Senior
Geologist, Geol. Survey of India, Calcutta,
India, Gp., Biost.
KASAHARA, Yoshio (~f,ij(jjkjE) Gifu Prefec.
Mus., 1-4-3, Kitayama, Gifu (501-31) M-Rg.
(St.)
KASE, Tomoki (Dniffip:!O Natn. Sci. Mus.,
3-23-1, Hyakunin-cho, Shinjuku-ku, Tokyo(160) M-Mo.
KASHIMA, Naruhiko (JItJil;~~) D. Sc., Dept.
Geol., Fac. General Educ., Ehime Univ. 3,
Bunkyo-cho, Matsuyama (790) P, M-St.
KATO, George (DI1~WJI1]) D. Sc., 314-11,
Higashioizumi-cho, Nerima-ku, Tokyo (177)
Bacteriology.
*KATO, Makoto (jJl1~ iiJi\() D. Sc., Dept.
Geol. & Miner., Fac. Sci., Hokkaido Univ.,
Sapporo (060) P-St., Corals.
KATO, Matajiro (j)n~X=-ElI;) 76-47, Takuhoku, Shinoro-machi, Sapporo (061-31)
KATO, Michio (j)n~;iillkjn D. Sc., Fac.· Integrated Art. & Sci., Hiroshima Univ., 1-1-89,
Higashi-Senda-machi, Hiroshima (730) C, RForam.
KATO, Susumu (j)O~ j~) 180, Hiranaka-cho,Nishi-ku, Nagoya (452)
KA TO, Yoshiziro (DII~N It-DI;) D. Sc., 1-603,
Heiwagaoka-jutaku, 3-13, Heiwagaoka, Meito-ku, Nagoya (465) C-Rg.
*KATTO, liro (1fI~;1~RIl) D. Sc., 8-40, Masugata, Kochi (780) Problematica.
-KAUFMANN, Godfrey F., P.O. Box 643,
Jensen Beach, Florida 33457, U. S_ A.
KA WABE, Tetsuya (lllill~ti!t) Dept. Earth
Sci., Fac. Sci., Chiba Univ., 1-33, Yayoi,
Chiba (280) C-Biost., I\1-Mo.
KA'vVADA, Shigema (fuIB3Dt@) 2-3-5, Maeji,
Urawa (336) St., Foram.
KAWAGUCHI, Ken-ichi (JIII.lilt-) Mezon dol\1ejiro, 5-15-25, Mejiro, Toshima-ku, Tokyo(171) C-Foram., St.

448
KAWAI, Masatora (iUj~IEw.) D. Sc., 1025,
Maegata, Hayashima-cho; Tsukubo-gun,Okayama Pref. (701-03) Rg.
KA WAKAMI, Hiroshi (JIll: $.) 1049-44, Shinmei, Ago-machi, Shima-gun, M ie Pref.
(517-05) St., Gp.
KAWAKAMI, Tooru (JIll:
Mitsubishi
Petroleum Development Co., Ltd., 2-6-2,
Ohtemachi, Chiyoda-ku, Tokyo (100) Pg.
KA WAMURA, Yo;;hinari (iUj:fi~t!1) Fac. Sci.,
Kyoto Univ., Kitashirakawa, Oiwake-cho,
Sakyo-ku. Kyoto (606) Ver.
*KA WAN~, Michihiro (i"J!ff;ii5l.) D. Sc., Inst.
Earth Sci., Fac. Educ., Yamaguchi Univ.
(753) St., Fusul.
KA WASA WA, Keizo (JlliR~:=:') 129, Iguchicho, Kochi (780) P, M-Biost.
KIKUCHI, Kanzaemon (9iijiU1W1lc.x.r'~) Shimokuji, Ryotsu-shi, Niigata Pref. (952-34) Mo.
KIKUCHI, Yoshibumi (9iij:l1.!l%':x:) Dept. Geosci.,
Tsukuba Univ. Sakura-mura, Niihari-gun,Ibaraki Pref. (300-31) Pe.
KIKUCHI, Yoshiki (9iijiU1.&~) D. Sc., 3-2-2,
Nishi, Kunitachi (186) Pg.
-KILMER, Frank Hale, Ph. D., Dept. GeoI.,
Humboldt State ColI., Arcata, California
95521, U. S. A. M, CoMo.
-KIM, Bong Kyun (~oo.:I$]) D. Sc., Dept. GeoI.
Seul Natn.Univ. Seul, Korea. Hg., Gp.
*KIMURA, Tatsuaki (;t:fi:illj!j) D. Sc., Dept.
Astron. & Earth Sci., Tokyo Gakgei Univ.,
Nukui-kitamachi, Koganei, Tokyo (184) MPI.
*KIMURA, Toshio (*:fiIiiHIE) D. Sc., GeoI.
lnst. Univ. Tokyo, 7-3-1, Hongo, Bunkyo-ku,
Tokyo (113) Tg., Hg.
KINOSHITA, Tsutomu
fIJ) Resources
Investigation Consultants Co., Ltd., 1-28-23,
Hongo, Bunkyo-ku, Tokyo (113) Gg., St.
KITAMURA, Tateharu (~tNfll!m) Meisei HighSchool, 2-5-20, Suehiro-cho, Oume-shi, Tokyo (198) M-Mo~, Biost.
KIT AZATO, Hiroshi (~tN! i~) D. Sc., Geosci.
Inst., Fac. Sci., Shizuoka Univ., 836, Oya,
Shizuoka (422) C, R-Foram.
*KOBATAKE, Nobuo ('NiHa-;;I<:) D. Sc., 2-6,
Niban-cho, Koshien, Nishinomiya (663) Hg.,PI.
KOBAYASHI, Fumio ('N'"j;Jt;;l<:) D. Sc., 1-811, Hagiyama-cho, Higashimurayama, Tokyo

or)

(*r-

(189) P-Foram.
*KOBAYASHI, Iwao ('NtMUIIO D. Sc., Fac.
Sci., Niigata Univ., 8050, Nino-cho, Igarashi,
Niigata (950-21) C, R-Mo., Microstructure offossils.
KOBAYASHI, Manabu ('Nt ~) D. Sc., Section of Secondary Education, Minstry of
Education, 3-2-2, Kasumigaseki, Chiyoda-ku,
Tokyo (100) P-Foram.
KOIKE, Hiroko ('J'iU1f'i't=f) 3-12-6, Shakujidai,
Nerima-ku, Tokyo (177) Anthropology.
*KOIKE, Toshio ('J'i!l!.Jliil:;;I<:) D. Sc., Geol. Inst.,
Fac. Educ., Yokohama Nat. Univ., Tokiwadai 156, Hodogaya-ku, Yokohama (240) P,
M-Conod.
KOIZUMI, Hitoshi ('HI{ J1r) Kesen Geology
Co., Ltd., 3-3-8, 301, Inagekaigan, Chiba(281) Trilobites, P-Brach., P-Cephal.
*KOIZUMI, Itaru (/HR m) D. Sc., lust. GeoI.
Sci., ColI. Gene. Educ., Osaka Univ., Toyonaka-shi, Osaka (560) C-Diatoms.
*KOKAWA, Shohei (fj})IIIIB'F-) D. Sc., 2-156,
Midori-machi, Rokujyo, Nara (630) C-PI.
KOMETANI, Hideo (*i:tJHIE) Kitaura-Saniku
Junior High School, 895, Narita, Kitauramura, Namekata-gun, Ibaraki (311-17) St.
KOMURA, Sei-ichi (/H1fi!f-) 13-303, Shinsayama-haitsu, 63, Aoyagi, Sayama (350-13)
Micropaleontology.
KONDA, Isao (*ttrn :9J) 28, Kuretake-cho,
Yamato-Koriyama-shi, Nara Pref. (639-11)
Foram.
*KONISHI, Kenji ('H!!iru!=) D. Sc., Dept_
Earth Sci., Fac. Sci., Kanazawa Univ., 1-1,
Marunouchi, Kanazawa, Ishikawa (920) Cal.,
Reef ecology, Isotope paleontology.
*KOT AKA, Tamio (/N~]3;!;;;I<:) D. Sc., Inst.
Geol. & Paleont., Tohoku Univ., Aobayama,
Sendai (982) C-Mo., Biost., Paleoenviron.,
Biometry.
KOTOH, Jiro (i!i!WiX~l3) 4-20-10, Minami-nagasaki-machi, Toshima-ku, Tokyo (171) CBrach., C-Foram.
KUBO, Chikahiro (:7-.lJiUI~5l.) Sukaihaitsu-308,
17-18, Shimei-cho, Kooriyama (963)-KUHN-SCHNYDER, Emil, Dr. Sc., Palaont.
lust. und Mus. Univ. of Zurich, Kunstlergasse 16, Zurich, Switzerland.
KUJIME, Akira (:7-.iX*11ll.) Oyo Corp., Ltd.,
Okida Bldg., 6-3, Nishi-toka-machi, Hiro-449
shima (733) Ag., Gg.
*KUSUMI, Hisashi (tfijJ! ~) D. Sc., Suzuga·
mine Women's College, 6-18, Inokuchi 4,
Hiroshima (733) M-Estherids.
*KURIHARA, Kenji (~~illt=-) D. Sc., St.
Pauls Univ., Nishi·ikebukuro, Toshima·ku,
Tokyo (171) C-Foram.
KURODA, Hidetaka (~EB*~.ir4-9-7, Yokodai,
Isogo-ku, Yokohama (235) Engineering geol.
KUROSA WA, Toshie (~iRfIJiftj) 8, Miyahara,
Takasaki (370-12) C-Gp.
*KUW ANO, Yukio (jlk!ll.f$:*:) D. Sc., Nat. Sci.
Mus., 3-23-1, Hyakunin·cho, Shijnuku·ku,Tokyo (160) Conod.; C, R-Foram.
.LEMONE, von Den Burc David, Ph. D., Post
office Box 3, El Paso, Texas 79968, U. S. A.
P, M-Biost.,·LIN, Ch'ao-Ch'i (;tUJl~) D. Sc., Depart.
Geol., ColI. Sci., Natn. Taiwan Univ., Taipei
Taiwan, China. Q-Geol., C-Mo., Decapoda .
• LING, Hsin Yi, Ph. D., Dept. Geol. N. illinois Univ., Dekalb, Illinois 60115, U. S. A.
Radiol., Silicoflagellates, Ebridians.
.LOEBLICH, Alfred Richard Jr., Ph. D., Dept.
Geol., Univ. California, Los Angeles, Calif.
90024, U. S. A. P, C-Foram., Nannopl., Algae.

*MAEDA, Yasuo (litrEB**:) D. Sc., 45, Sakuragaoka-cho, Nada-ku, Kobe (657) Paly.
*MAIYA, Seijuro (*:t:t~~af5) D. Sc., Tech.
Lab., Japan Petrol. Expl. Co., 3190-1, Musashino, Hamura-cho, Nishitama-gun, Tokyo(190·11) C, M-Foram.
MAKINO, Toru (!J:lzlllf M) D. Sc., 3-6-3, Shi·
chirigahama, Kamakura (248) Coin.

*MASUDA, Koichiro (JflI:B:,¥:-a~) D. Sc., Dept.
Geol., Miyagi Univ. Educ., Aoba, Sendai(980) CoMo.
*MATOBA, Yasumochi ((19~*:~D D. Sc., Inst.
Min. Geol., Min. ColI., Akita Univ., 1-1,
Tegatagakuen-machi, Akita (010) Foram.
MATSUDA, George (:f'i:mmP'J) 1307, Keizawa,
Kosei-cho, Nakakuma-gun, Yamanashi Pref.
(400-04) St.
MATSUDA, Tetsuo (t'i:ITI'/if*:) Fac. Sci., Osaka Univ., 459, Sugimoto-cho, Sumiyoshiku, Osaka (558) Conod.
MATSUI, Seiichiro (t'i:Jj5ilJj1(-RB) Geol. Inst.,
Fac. Sci., Univ. Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo (113) Mo.
MATSUKA WA, Masaki (t'i:JlflEtlt) Fuchu Nishi High School, 4-6-7, Nishin-cho, Fuchu(183) M-Mo., Biost.
MATSUKUMA, Akihiko (t'i:~~g:)
Dept.
Geol., Fac. Sci., Kyushu Univ., 6-10-1,
Hakozaki, Higashi-ku, Fukuoka (812) Mo.
*MATSUMARU, Kuniteru (t'i::1LlliIP~) D. Sc.,
Dept. Geol., Fac. Ed uc. Saitama U niv., U rawa (338) Larger Foram.
MATSUMOTO, Eiji (t'i:::if>:~=-) D. Sc., Natn.
Sci. Mus., 3-23-1, Hyakunin-cho, Shinjukuku, Tokyo (160) C-Mo., Biost .
*MATSUMOTO, Tatsuro (t'i:::if>:iEflfl) D. Sc.,
c/o Dept. Geol., Kyushu Univ., 6-10-1, Hakozaki, Higashi-ku, Fukuoka (812)
MCephal., Biost.
MATSUNAGA, Fumio (t'l:7k=-=:~)
Dept.
Geol., Shimane U niv., Matsue (690) St., Sd.
*MATSUNAGA, Takashi (t'i:7k :'¥:) D. Sc.,
76, Matsugaoka, Kanagawa-ku, Yokohama(221)*MATSUO, Hidekuni (t'i:~~*'ffl) D. Sc., Dept.
Geol., College of Liberal Arts, Kanazawa
Univ., 1-1, Marunouchi, Kanazawa (920)
M,C-PI.
MATSUO, Yasuhiro (t'U§Jjjt51.) 3-16-25, Shoan,
Suginami-ku, Tokyo (167)
MATSUOKA, Kazumi (:f0f.lil~3't:) Fac. Sci.,
Osaka City Univ., 492, Sugimoto-cho, Sumiyoshi-ku, Osaka (558) C-Dinoflagellates.

MASAT ANI, Kiyoshi CiE:t:t jJ!f) 461-8, Kitaakitsu, Tokorozawa (359) M-Mo., Pg.
MASUDA, Fujio (ffllEB@l±U$) D. Sc., 2-4-3,
Inst. Geoscience, Univ. of Tsukuba, Sakuramura, Ibaraki (300-31) Geochemistry, St.

*MATSUSHIMA, Yoshiaki (t'i:,I},~a) Kanagawa Pref. Mus., 5-60, Minaminakadori,Naka-ku, Yokohama (231) Biost., Mo.
*MATSUSHIT A, Hisamichi (t'Ff 7-.~) D. Sc.,
2-24-25, Takasago, Fukuoka (810) Rg., Ag.

• LOS ANGELES COUNTRY MUSEUM OF
NATURAL HISTORY, LIBRARY, 900 Exposition Blvd., Los Angeles, Calif. 90007,
U.S.A.
.MA, Ting Ying H. CI!!'fr~!f90 D. Sc., Dept. Geol.,
Coil. Sci., Nath. Taiwan Univ., Taipei,
Taiwan, China. P-Corals, St.
*MABUTI, Sei-ichi CI!!'frVHIfJ!!-) D. Sc., 4-18-3,
Nukui-minami-cho, Koganei (184) St.
*MAEDA, Shiro (litrEB~a~) D. Sc., 2-3-7,
Sugano-cho, Ichikawa (272) M-Mo, Rg.

450*MATSUSHITA, Susumu (ftr J!) D. Sc.,
30, Yoshida, Kamiadachi·cho, Sakyo-ku,
Kyoto (606) St.
MIl, Sachiko (=:tt: ~ 't:,'f) Hiroshima Univ.,°Higashisenda-machi, Hiroshima (730) Diagenesis of carbonate sediments.
MIKAMI, Takahiko (=:J::..~) D. Sc., Fac.
Sci:, Yamaguchi Univ., Yoshida, Yamaguchi(753) P-Biost., Sd.
MIKI, Akio (=:*~~) D. Sc., Fuyo Petroleum
Development Co., Ltd., 1-6-1, Otemachi,
Chiyoda-ku, Tokyo (100) M-Paly.
MIKI, Takashi (=:* :$':) D. Sc., Dept. Geo!.,Fac. Sci., Kyushu Univ., Hakozaki, Fukuoka(812) C·Sd.
MIMOTO, Kenji (=:*(~=) 1374-1, Ukitsu,
Muroto City, Kochi Pref. (724-17) CoMo.
MINOURA, Kouji (~lill$fu) Inst. Geo!. &Paleont., Fac. Sci., Tohoku Univ., Aobaya·
ma, Sendai (980) Hexacorals.
MIT ANI, Katsutoshi (=::frJmtlJ) D. Sc., Geo!.
Surv. Hokkaido, Minami-11, Nishi-3, Sapporo (060) St.
MIYATA, Yuichiro ('8"EBbi-RI;) c/o Mr. Ishihara, 2-26-2, Hakomatsu, Higashi-ku, Fukuoka (812) M·St., Sd.
*MlZUNO, Atsuyuki (7.K!Jlt~:ff) D. Sc., 1385014, Hirado-cho, Totsuka-ku, Yokohama (244)Mg., CoMo.
MIZUT ANI, Shinjiro (7.K:fri$fuf.!ll) D. Sc., Dept.
Earth Sci. Nagoya Univ., Furo-cho, Chikusa·
ku, Nagoya (464) Sd., Tg.
*MORI, Kei (ff~) D. Sc., Inst. Geo!. &Paleont., Tohoku Univ., Aobayama, Sendai(980) Porifera, Coelenterata, Stromatoporoidea.
MORI, Shinobu (ff1J) Fac. Sci., Nagoya
Univ., Furo·cho, Chikura·ku, Nagoya (464)
C·Diatoms.
*MORISHIT A, Akira (~r IIII) D. Sc., Inst.
Earth Sci., Fac. Sci., Nagoya U niv., Furocho, Chikusa-ku, Nagoya (464) C·Echinoids,
Biost.
MOROZUMI, Yoshiro (jjf,j~7.fftl;) Osaka Mus.
Nat. Hist., Nagai Park, Higashi-Sumiyoshiku, Osaka (546) C-Foram.
• M ORRIS. Robert C, Ph. D., Geo!. Dept.
Northern Illinois Univ., Dekalb, Illinois
60115, U. S. A., Pg.
*MURAI, Sad amasa (Htt: t:i:ic) D. Sc., 2-14-36,

Kitayama, Morioka (020) CoP!.
MURAMATSU, Jiro (ttfl=nll) Fac. Sci., Chiba
Univ., 2-18-3, Nishikubo, Musashino-shi,
Tokyo (180) P-Fusu!.
MURAMATSU, Ken·ichi (H1'1J.!l:-) 401, Kawasaki Build., 3-3, Otodo·machi, Mizuho-ku,
Nagoya (467) C·St.
MURAMOTO, Kikuo (H;<t;:::~l:~bi) 137-28, Yayoihanazono-cho, Mikasa City, Hokkaido(068-22) M-Cepha!.
MURAMOTO, Tatsuo (:f~*w:Mt) 137-28, Yayoihanazono-cho, Mikasa City, Hokkaido(068-22) M-Cepha!.
*MURAT A, Masafumi (HEBJEx:l D. S., Dept.
Geo!., Fac. Sci., Kumamoto Univ., 2-39-1,
Kurokami-cho, Kumamoto(860) P-Mo.,
Fusu!., Conod., P, M-Hg.
NAGAI, Koichi (ffi:tt::$':-) Inst. Earth Sci.,
Col!. Gen. Ed uc., Kyushu U niv., Ropponmatsu, Fukuoka (810) Biost., Sd.
NAGAI, Kozo (7ktt:¥"*=:) D. Sc., 5-29, Yuwatari-cho, Matsuyama (790) Hg., P!.
NAGAI, Setsuji (7ktt:ili'ifu) 4018-3, Dokusho,
Minamikiso-machi, Kiso-gun, Nagano Pref.
(399-53) Mo.
*NAGASA WA, Jyoji (7kifU4!1?f;) D. Sc., 2-2214, Ekoda, Nakano-ku, Tokyo (165) C-Mo.,
C-Ver., Pe.
NAGASE, Kazuo (ffi:l!l-~5FllMO D. Sc., Hot Spring And Earth Science Research In. ofKanagawa Pref., 997, Yumoto, Hakone-machi,
Kanagawa Pref. (250-03) Ag. (GroundWater)
NAGATA, Kyoichi (ffi:EB:¥:-) Central Technical Laboratory, Japan Petroleum Exproration Co., Ltd., 3190-1, Hane, Hamura-machi,
Nishitama-glln, Tokyo (190-11) Biost., C.MPg., Radiol.
NAITO, Gentaro (r'l~iJlji*f.!Ij) 9-26, HigashiMatsuzaki-cho, Hofu-shi, Yamaguchi Pref.
(747) M-P!.
NAKAGAWA, Takao (fq,JII~&~) Dept. Geo!.
Min., Fac. Sci., Niigata Univ., Igarashi,
Niigata (950-21) CoVer.
NAKAMICHI, Osamu (.pig ~) Kitagawa
Kogyo Co., Ltd., Kanda-cho, Kanazawa (921)Isotope paleont.
*NAKAMURA, Koji (.p;f:Hlt=) D. Sc., Dept.
Geo!. & Mineral., Fac. of Sci., Hokkaido
Univ., Sapporo (060) Permian Brach.

451*NAKA.\1URA, '\1anjiro (!:j:t:M7J(Xnr;) D, Sc"
CoIL & Engineering, Sci, Univ, Tokyo,
Yamazaki, Noda-shi, Chiba Pref. (271) PAlgae_*NAKANO, .\Iitsuo (!:j:t'I!TJt:wn D. Sc., Inst.
GeoL & Min., Fac. Sci" Hiroshima Univ.,
Higashi-senda-machi, Hiroshima (730) C, MMo.
*NAKASEKO,- Kojiro (!:j:till:tI¥/J:nn D. Sc.,
3-18-4, Momoyamadai, Suita (565) Biost.,
Hadiol.
NAKASHI.\'IA, Kouichi (!:j:tillJtjli-) 11-18, Heiwa-machi, Minami-ku, Fukuoka (815) P, MBiost.
NAKAZA WA, Katsumi (,+,tR51::::) 1-490, Wakatsukidanchi, Nagano (380)*NAKAZA WA, Keiji (!:j:ttR=!':=-) D. Sc., Dept.
Geol. & Mineral., Fac. Sci., Kyoto Univ.,
Sakyo-ku, Kyoto (606) P, M-Mo., Sd.
NAKAZEvIA, Shuuichi (!:j:tillJ1lf-) 2-17-5, Koraku, Bunkyo-ku, Tokyo (112)
NARUSE, Takehiko (j&;i!lKij~B:) The FirstTechnical School, Air Self-Defense Force,
Jyurokken, Kumagaya (360) Biost., FusuL*NASU, Noriyuki (~~*e¥) D. Sc., Ocean
Res. Inst. Tokyo Univ., 1-15-1, Minamidai,
Nakano-ku, Tokyo (164) Mg., Sd.
*N ATORI, Hiro'o (15J&ftIj~) D. Sc_, GeoL
Surv. Japan, 8, Kawada-cho, Shinjuku-ku,
Tokyo (162) C-Foram.
NEMOTO, Nagayuki (tH*~1T) Geol. Inst.,
Fac. Sci., Chiba Univ., Chiba. c/o Tori
Kyoso, 2-3-3, Todoroki-cho, Chiba (280) Mo.
·NESTELL, .\1erlynd Keith, Ph. D., Dept.
GeoL Univ. of Texas at Arlington, Arlington, TX 74019, U. S. A. Fusul., Foram.
*NlITSUMA, Nobuaki(m:~{BA)j) D. Sc., Geosci.
Inst., Fac. Sci., Shizuoka Univ., 836, Oya,
Shizuoka (422) Foram.
*NISHIDA, Shiro (flIll±lstAA) D. Sc., Dept.
·Earth Sci., Nara Univ., Educ. Takabatake,
Nara (630) C, H-Nannopl., Biost., Mg.
*NISHIDA, Shoichi (flIlm~-) D. Sc., Inst.
Geol. & Miner., Fac. Sci., Niigata Univ.,
8050, Igarashinino-cho, Niigata· (951)·
NISHIDA, Tamio (flIlEEEIOJfE) D. Sc., 1-18-64,
Hinode, Saga (840) P-Mo.
NISHIKAWA, Isao (fJIlJII J}]) 1797, Yuki,
Otsu, Yuki-cho, Jinseki-gun, Hiroshima Pref.
(720-18)NISHIKAWA, Makoto (flIl II I ID1<) 3-7-11, Nakamachi, Jyoetsu, Niigata Pref. (943) Biost.,
Foram.
NISHIKAWA, Yasuyuki (flIlJIIEllt:fT) 1514, Hourenkuretake-cho, N ara (630) Rg.
NISHIMIYA, Katuhiko (flIl'§"51B:) D. Sc., Yamanashi Univ., 4, Takeda-cho, Kofu (400)St., Hg.
NISHIMURA, Akiko (fJIl:Mll)J.:r·) C 20-102, 2-7,
Shinsenarihigashi-machi, Toyonaka (565)
NISHIMURA, Akira CI!liH w.3) Dept. Marine
GeoL, Geol. Surv. Japan, Hisamoto 135,
Takatsu-ku, Kawasaki (213) C-Foram., St.
NISHIO, Toshio (flIlfiBlf#~) 368, Higashi·Oizumi-machi, Nerima-ku, Tokyo (177) CoSt.
NISHIWAKI, Niichi (flIlH~=--) D. Sc., Dept.
Geol. & Miner., Fac. Sci., Kyoto U niv.,
Kitashirakawa, Sakyo-ku, Kyoto-shi, Kyoto(606) Mathematical Geology.
NISHIZA WA, Takeshi (flIltR ~J) 95, Obatatsunetou, Moriyama-ku, Nagoya (463)*NODA, Hiroshi (!l!JEErjlip]) D. Sc., Inst.
Geosci., C'niv. of Tsukuba, Sakura-mura,
Niihari-gun, Ibaraki Pref. (300-31) Biost..
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*NODA, Masayuki (!l!JF[Ultz) D. Sc., Wasadahigashi Junior High School. Fukagochi 5,
Oita (870) M-Mo., Biost.
*NODA, Mitsuo (!l!JFH7'l;U:fD D. Sc., 1225, Miyake Nishi-Ohashi, Minami-ku, Fukuoka(815) St.
*NOGA~H, Yasuo (!l!Jl::.fh~1=.) D. Sc., 5-23,
Narutaki haruki-cho, Ukyo-ku, Kyoto (616)
Conod., FusuLNOHARA, Tomohide (1J\f1Jli:~~1lf) Dept. Geol.,
CoIL Educ., Univ.' Ryukyus; Shuritonokura,
Naha (900) Ostracodes, CoVer.
NOKARIY A, Hiroshi (!l!JjjJ**) 444-109, Kogane, Matsudo (270) Ver.
NOMUHA, Hitsuo (!Jlff'nit~) Inst. GeoL
Paleontology, Tohoku Univ. Aobayama, Sendai (980) Foram.
.
NUMANO, Kyoichiro Ofl!l!JfJ~-nrl) 1465, Nadacho, Gobo-shi, Wakayama Pref. (649-15) St.
*OBA, Tadamichi (*~!f,~) D. Sr., Ocean
Res. Inst., Tokyo Uuiv., 1-15-1, Minamidai,
Nakano-ku, Tokyo (164) Isotope geol.
*OBATA, Ikuwo (/h~fm~E) D. Sc., Natn; Sci.
Mus., 3-23-l. Hyakunin-cho, Shinjuku-ku,
Tokyo (160) M, C, R-Cephal., Biost.

452
ODA, Motoyoshi (~EB*J5!) Inst. Geol. &Paleont., Fac. Sci., Tohoku Univ., Aobayama,
Sendai (980) St., Foram.
OGASA WARA, Kenshiro ('H2:lJit~gg~!5) D.
Sc., Inst. Geol. & Paleont., Fac. Sci., Tohoku
Univ., Aobayama, Sendai (980) CoMo.
OGA WA, Hisashi ('HI! ~) Mizuho Kenzai
Kogyo Co., Ltd., 8-877, Nai'iki, Orne (198)Tg.
OGA WA, Kennosuke ('HI\~z~IiD 164, Nakazato, Fuji (417) C, R-Mo., St.
OGINO, Shigeji (~'1J!r~i'tl) H6-505, Nobadanchi, 1469, Noba-cho, Kounan-ku, Yokohama (233) Biost.
OGOSE, Sunao (1=.~ !i!;,) D. Sc., 2-11-3-13,
Tsurukawa, Machida (181) C-St., Mo., Pe.
"OGURA, Yudzuru ('J'~ illft) D. Sc., 5-20-12,
Nishi-ikebukuro, Toshima-ku, Tokyo (171)PI.
OHANA, Tamiko (:k~ltR;T) Dept. Astron. andEarth Sci., Tokyo Gakugei Univ., Koganei,
Tokyo (184) PI.
"OHARA, Sakae (:k1Ji{ ~~) D. Sc., Geol. Inst.,
CoIl. Arts & Sci., Chiba Univ., 1, Yayoicho, Chiba (280) CoMo.
"OHT A, Yoshihisa (*EB{!f~) D. Sc., 1914,
Kamikubo, Katsuyama-machi, Miyako-gun,
Fukuoka Pref. (824-08) M-Mo.
"OINOMIKADO, Tsuneteru (:kiX~rr~!iUIl) D.
Sc., 1-25-15, Nagasaki, Toshima-ku (171)
Applied paleont.
OISHI, Toru (:k:5 W) 3-11-18, Tokiwa,
Urawa (336) PI.
"OKADA, Hakuyu (foi'ilEBr..ltin D. Sc., Dept.
Earth Sci., Fac. Sci., Shizuoka Univ., 836,
Oya, Shizuoka (422) Sd.
OKADA, Hisatake (foi'ilEBt.5]~) D. Sc., Dept.
Earth Sci., Fac. Sci., Yamagata Univ., 1,
Kojirakawa, Yamagata (990) Nannopl.
OKADA, Kiyohumi (foi'ilEBi~'f;t:) 4-16,70-8, Honcho, Higashimurayama (189) Coal petrology.
OKADA, Yutaka (foi'iJEB :lilt) Geol. Inst., Fac.
Sci., Tokyo Univ., 7-3-1, Hongo, Bunkyo-ku,
Tokyo (113) Ostracodes.
OKAFUJI, Goro (foi'il§:n.~~) Omine Senior HighSchool., Yoshinori, Omine-cho, Mine (75922) Mammal.
OKAMI, Kazuyoshi (:kJ:'f11J5!) D. Sc., Fac.
Tech., Iwate Univ_, 4-3-5, Ueda, Morioka(020) M-Conod., Sd.

*OKAMOTO, Kazuo (J!f;)*'f111c) D. Sc., Shinonome School, Fac. Educ., Hiroshima Univ.,
3, Shinonome, Hiroshima (734) C-Mo.,
Biost.
OKAMURA, Chonosuke (foi'ilN:JjtzWJ) Okamura
Fossil Laboratory., 5-12, Jinbeidori, Minatoku, Nagoya (455) Gp.
OKAMURA, Makoto ([lillN Jl;) Dept. Geology,
Fac. Educ., Kumamoto Univ., 2-40-1, Kurokami, Kumamoto (860) Biost., Calcareous
Nannopl.
OKAZAKI, Yoshihiko (foi'il~~~) 5-84, Shinomiya, Kogane-zaka, Yamashina-ku, Kyoto(607) CoVer.
OKAZAKI, Yoshio (foi'il~EI31c) D. Sc., Kushiro
College, Hokkaido Univ. of Educ., 1-15-55,
Shiroyama, Kushiro (085) Gg., Gp.
OKI, Kimihiko (:k*:6:~) Inst. Earth Sci.,
Fac. Sci., Kagoshima Univ., 201, Kamoikecho, Kagoshima (890) C-St., Foram.
*OKIMURA, Yuji (i'Pttm=) D. Sc., Inst.
Geol. & Miner., Fac. Sci., Hiroshima Univ.,
1-1-89, Higashisenda-cho, Hiroshima (730)P-Foram., Biost., Sd. (carbonate)
OKOSHl, Akira (:k~ ~) 1-2-2-407, Watarida, Kawasaki-ku, Kawasaki (210) Q-Mo.
OKUDA, Hisashi (J$!EB fi;j) Osakabe Primary
School, 3-29, Osakabe, Yao (581) M-Hexacoral.
OKUMURA, Kiyoshi (J$!f;j m) 1026, Yamanishi, Ninomiya-cho, Naka-gun, Kanagawa
Pref. (259-01) Q-Gg.
OKUMURA, Yoshitsugu (J$!f;jJffl'X) Mizunami
Fossil Mus., Yamanouchi, Akeyo-cho, Mizunami, Gifu Pref. (509-61) CoMo.
*OKUTSU, Haruo (~lt~1=.) D. Sc., 14-1,
Shintsutsumi, Komatsushima, Sendai (983)
Hydrological geol.
*OMORI, Masae (:k~~iftj) D. Sc., Fac. General Educ., Azabu Veterinary ColI., 1-17-71,
Fuchinobe, Sagamihara, Kanagawa Pref.
(229) Mo.
*OMURA, Akio (:kWJJ'j$) D. Sc., 1-28-11,
Yayoi, Kanazawa (921) Isotope paleont.
OMURA, Kazuo (:k;j:;j-1c) D. Sc., Dia Consultant Co., Ltd., Tanaka Building, 2-2-6,
Uchikanda, Chiyoda-ku, Tokyo (101) St., Ag.
ONO, Kei-ichi ('Hff~-) Natn. Sci. Mus., 323-1, Hyakunin-cho, Shinjuku-ku, Tokyo(160) Ver.

453
ONO, Terubumi (::k!lf.H!tx:) Dept. Geo!. andPaleont., Fac. Sci. Kyoto Univ., Kitashirakawa-Oiwakecho, Kyoto (606) Pe., In.
ONODERA, Shingo ('J'!lf=!ff~t'f) 3-30, Sakuragi-cho, Ichinoseki (021) CoVer.
*ONOE, Toru (~l:. )j!:) Geological Survey ofjapan, Tokyo Office, 8, Kawada-cho, Shinjuku-ku, Tokyo (162) CoP!.
*ONUKI, Yoshio ('H~t:m1Jj) D. Sc., 2-15-5,
Kunimi, Sendai (980) Biost.
ORDONEZ, Elvira P.,Petroleum Div., Bureauof Mines,Herran Street \Ianila, Philippines.
Smaller foram.
OSADA, Toshiaki (~EEil¥<Ij}j) 4-301, 1-7 Katsushima, Shinagawa-ku, Tokyo (140) Mo.
OSAKI, Yasuyoshi (:;k~LiJt6) Tsuyazakimachi, Munakata-gun, Fukuoka Pref. (81133)
OSHITE, Kei (fiji=? 1951:) D. Sc., Dept. Geo!.,
Hakodate Branch, Hokkaido Univ. of Educ.,
1, Hachiman-cho, Hakodate (040) St., Diatoms.
*OTA, Masamichi (:;t!llIE;IV D. Sc., The
Office of Preparation for Kitakyushu Museum of Natural History, Tobata Shiminkaikan
Bldg., 1-1-49, Senbo-cho, Tobata-ku, Kitakyushu (804) Biost., P-Foram., Gp.
*OTSUKA, Hiroyuki (:;k~mZ) D. Sc., Inst.
Earth Sci., Fac. Sci., Kagoshima Univ.,
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OTSUKA, Masao (:;k~~!ij) Matsubase Higashi School for Physically Handicapped
Children. 2233-9, Kengun-machi, Kumamoto(862) St., Mo., Worms.
OTSUKA, Yasuyo (:;k~~t\:) 1002, Matsudo,
Chiba Pref. (271)*OZAKI, Hiroshi (~~ if) D. Sc., 2-5-29,
Amanuma, Suginami-ku, Tokyo (167) C-Hg.
*OZAKI, Kimihiko (~~~~) Fac. Educ. Yokohama Nat'l Univ., Tokiwadai, 156, Hodogaya-ku, Yokohama (240) CoP!.
*OZA WA, Tomowo ('NR~~) D. Sc., Geo!.
Inst., Univ. of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo (113) P-Foram., C-Gastropoda,
Evol utionary Paleont.
*OY AMA, Katsura (:;kl1! tE) D. Sc., Geo!.
Surv_ japan, Tokyo Office, 8, Kawada-machi,
Ichigaya-cho, Shinjuku-ku, Tokyo (162) Mo.,Ecol.
*OY AMA, Toshiji (:;kllJij::(j() D. Sc., 208, Ya-naka, Fujishiro-machi, Kitasoma-gun, Ibaraki Pref. (309-01) M-P!.
.PARlvVATVORN, Patehara, 45/47, Soi Sripichal, Bangsue, Bangkok, Thailand, Foram.
·PERIODICAL DEPARTl\IENT PRINCETON
UNIVERSITY LIBRARY, Princeton, New
jersey 08540, U. S. A.
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.RIGBY, j. Keith, Ph. D., Dept. Geo!., 361
Eyring Science Center, Brigham Young
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*SADA, Kimiyoshi ({fr.EE~H) D. Sc., 203,
Green-Shato-203, 1132, Midori-machi, Hiroshima (734) Fusu!., Corals.
·SADLICK, "falter, Ph. D., Dept. Geo!.,Univ.
Illinois, Chicago Circle, Chicago, Illinois
60680, U. S. A.
SAITO, Minoru (1f1W ~) D. Sc., Fac. Arg.,
Kagawa Univ., 305 Ikenobe, Miki-cho, Kitagun, Kagawa Pref. (761-07) St., Mo.
SAITO, Takashi (1f~ [If) japan Petrol. Dev.
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*SAITO, Toshio (1f~~;e:J:ID D. Sc., Dept.
Earth Sci. Ibaraki Univ., 2-1, Bunkyo-ku,
2-chome, Mito (310) Sd.
*SAITO, Tsunemasa (1fIW'i;~IE) D. Sc., Dept.
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*SAITO, Yasuji (1fIW>1f=) D. Sc., Natn. Sci.
Mus., 3-23-1, Hyakunin-cho, Shinjuku-ku,
Tokyo (160) Sd.
SAITO, Yutaka (1f~ j~) D. Sc., Fac. Educ.,
Shinshu Univ., Nishinagano, Nagano (380)
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SAITO, Rinji ('*jiii'.f{j() D. Sc., 4-47-2, Kurokami, Kumamoto (860) St.
*SAKAGAMI, Sumio (itil:.ul::;J() D. Sc., Dept.
Earth Sci.,Fac. Sci., Chiba Univ., Yayoi-cho,Chiba (280) Bryozoa, Fusu!., Conod.
*SAKAGUCHI, Shigeo (itiPlfi:Mt) D. Sc., A 1201, 2-5, Higashi-machi, Shisenri, Toyonaka

454(565) St., Fusul.
SAKAI, Toyosaburo (mi:lH!!t:::::.fti» D. Sc., Inst.
Geol. Paleont., Tohoku Univ., Aobayama,
Sendai (980) C·Radiol.
*SAKAKURA, Katsuhiko (Jf;[E-JmI%:) D. Sc.,
9-20-3, Seijyo, Setagaya-ku, Tokyo (157)Ag.
SAKURAI, Kin-ichi (j;kJH"'(-) D. Sc., 1-15,
Kandasuda-cho, Chiyoda-ku, Tokyo (101)Mo.
·SAMANIEGO, Remedios M., Bureau of Mines,
Herran St., Manila, Philippines. Foram.,
Mo.
SA).tlATA, Tetsuro (1!r:(!R~ftll) 5-10-21, Inamuragasaki, Kamakura (248) Micropal.
SASAKA \VA, Sei-ichi (tfEJlliir-) Japan Petrol.
Expl. Co., Ltd., Nagaoka Branch, 2-11-11,
Jyooka, Nagaoka (940) Pg., Foram.
SASAKI, Mamoru (ftc.q *iIti) 1786-8, Takaiwa,
Shiraoka-machi, Minami-saitama-gun, Saitarna Pref. (349-02)
SASH IDA, ~azuo OfiIIlJl~Y3) 167, ]yokawara. machi, Akishima (196)
SATO, Jiro ((tr.~=r~i» 1-78, Omote-Koji, Mizusawa·shi, Iwate Pref. (023) Paleoichthyology.
*SATO, Seiji (Itcli'il!iXwJ) D. Sc., 6-206, Konohana-danchi, Hiragishi, Sapporo (062) Pall'.
*SATO, Tadashi (I!i:)~# JE) D. Sc., Inst.
Geosci., Univ. Tsukuba, Sakura.mura, Niihari-gun, Ibaraki Pref. (300--31) M·Cephal.,
Tg.
SATO, Yoshio \t5:~{l.::"I:l) Dept. Geol., Fac.
Sci., Kyushu Univ., 6-10-1, Hakozaki, Higashi-ku, Fukuoka (812) CoMo.
SA \VA, HideoCiR %1:) 2-81, Mayamazu,
Kumamoto (861-21) Gg.
SAWADA, Yoshio (iRlIl!&!fj) D. Sc., Muroran
ColI. Tech., 27-1, Mizumoto-cho, rvIuroran(050) Biost., Mo.
SA WA~lURA, Konosuke (i],\H:§itZllj]) D. Sc.,
Hokkaido Branch, Geol. Surv. Japan, Minami-I, NishH8, Chuo-ku, Sapporo (060) Gg.,
Diatom; .
SAWARA, Norihiko (~M'J.H~~) Japan Petrol.
Expl. Co., Ltd. Minami-23, Nishi-7, Chuoku, Sapporo (064) Biost., Foram.
.SCHMIDT-EFFING, Reinhard, D. Sc., Escuela
Centroamericana de Geologia, Univ. Costa
Rica, Apartado 35, Costa Rica, M-Cephal.,

Rg.
SEKIDO, Shinji (~p{a(j:) 1-23, Hondaikumachi, Komatsu (923) M-Pl.
SENAHA, Tsutomu (i'1I!l~~Hf) 3-25-7, Kumoji,
Naha (900) Foram.
·SERIALS SECTION, STANFORD UNIVERSITY LIBRARY, Stanford, California U. S. A.
SHIBATA, Akira (!!!~IH :lit) 217-2, Takao,
Niimi (718) Gp.
SHIBATA, Hiroshi (~JIl RlJ) Inst. Earth Sci.,
Fac. Sci., Nagoya Univ., Furo-cho, Chikusaku, Nagoya (464) CoMo.
SHIBATA, Toyokichi (~In:\!';l:j!n D. Sc., Inst.
Geol. & Paleont., Fac. Sci., Tohoku Univ.,
Aobayama, Sendai (980)
SHIIDA, Isao (;t1fIIIJ?b) D. Sc., 151-2, Yadahara-cho, Nara (630-21) St.
SHIMAKURA, Misaburo (,@,~B:::::'f!l\) D. Sc.,381-5, Arayashiki-cho, Kidera, Nara (630)PI.
SHIMAZAKI, Togo (r.:jiil:Jt!t1iJ 2-7-14, Kitamachi, Warabi (335) Paly.
SHIMIZU, Daikichiro (ii~f7.l(*j!fftl;) D. Sc.,
Dept. Geol. & Miner., Fac. Sci., Kyoto Univ.,
Sakyo-ku, Kyoto (606) Hg., P-Brach.
SHIMIZU, Teruo Wi7.lcWA5'i:) Fuya-cho-OikeAgaru, Nakakyo-ku, Kyoto (604) Education.
SHIMOY AMA, Shoichi CFLUIE-) Dept. Geol.,Fac. Sci., Kyushu Univ., Hakozaki, Higashiku, Fukuoka (812) P,M-St.
SHINBO, Kyuya (~{ltt~.';~J;) 7-324, Gokamutsumi, Matsudo (270) Foram., Biost.
SHINT ANI, Tosio OIfril-(~t1t) 1-12-10, Sakura,
Setagaya-ku, Tokyo (156) Gp.
SHIOBARA, Tetsuro (.t?;IJj(~fti» D. Sc., Fac.
Educ., Hirosaki Univ., Bunkyocho-l, Hirosaki (036) C-Foram., Gg.
SHIRAGAMI, Takashi (sf!!! :§it) 1-17-9, Misono-cho, Yao (581) Ag.
SHIRAI, Takehiro (I'3JHltr£D D. Sc., Fac.
Educ., Niigata Univ., 2, AsahimachidorL
Niigata (951) C-St., Foram.
SHIRAISHI, Shigeyoshi (S;onlt~) Kamitsushima High School, Hitakatsu, Kamitsushima-cho, Kamiagata-gun, Nagasaki Pref.
(817 -17) C-Ichnology.
SHIRAKI, Takayoshi (S*:§itf!.) c/o Mr. Hotta
1-8-6, Ikebukurohoncho, Toshima-ku, Tokyo(171) Biost.
SHITANAKA, Masaki Cf4'§',tiD Mikata High

455
School, Kiyama, Mikata-cho, Mikata-gLLn,
Fukui Pref. (919-13) Micropaleont.
'SHUTO, Tsugio C-i§Il!iC7:~) D. Sc., Dept.
Geol., Fac. Sci., Kyushu Univ., Hakozaki,
Higashi-ku, Fukuoka (812) CoMo.
SHUZUI, Haruo ('ifIlifi:i'M!O 5-9-6, Sodegaura,
Narashino-shi, Chiba Pref. (275)·SOARES, Antonio Ferreira, Ph. D., Museue Laboratorio Mineralogico e Geologico,
Universidade de Coiwbra, Biost., M-Mo.
SOBAjIMA, Takeshi ((;)flM:it'r;e.) 43, Itarajutaku, 798-1, Mitake, Mitake-cho, Kani-gun,
Gifu Pref. (505 51) Conod.
SOGABE, Masatoshi (Tht:flti'llllEij'{) Geol. Surv.
japan, Tokyo Branch, 8, Kawada-cho, Shinjuku-ku, Tokyo (162) St.
·STACH, Leopold William, D. Sc., 34/50,
Canterbury Road, Middle Park 3204, Australia. Biost., Mg., Pg.
·STEWART, Lowther j., Ph. D., Dept. Geol.,
Univ. Puget Sound, Tacoma 6, Washington,
U.S.A.
SUGANO, Kozo (1i'!HJf=:) Dept. Earth Sci.,
Osaka Kyoiku Univ., 43, Minamikawahoricho, Tennoji-ku, Osaka (543) M, C-Radiol.
SUGA Y A, Masashi Ciir:frlt\(R'j) 1235, Toumae,
Tsunezumi-mura, Higashiibaraki-gun, Ibaraki Pref. (311-11) Biost., Fusul.
SUGIMOTO, jiro (;f~*i?(&B) 1-31-17, Tamagawa, Ota-ku, Tokyo (144)
SUGIMOTO, Mikihiro (;f~*~HIj) Geol. Inst.,
Fac. Educ., Kanazawa Univ., 1-1, Marunouchi, Kanazawa (920) St.
'SUGIMURA, Akihiro (;f~1illBilL) Akiyoshidai
Sci. Mus., Shuho-cho, Mine-gun, Yamaguchi
Pref. (754-05) Bryozoans.
SUGITA, Fukumatsu (;f~BH~t'~) Dept. Earth
Sci., Osaka Kyoiku Univ., 43, Minamikawahori-cho, Tennoji-ku, Osaka (543) M-In.
SUG ITA, M unemitsu ct~EB*ij3ij) Dept. Earth
Sci., Fac. Sci., Okayama Univ., Tsushima,
Okay am a (700) Tg.
SUGIYAMA, Tetsuo (f~LLJ1t~) Dept. Geol.,Fac. Sci., Kyushu Univ., Hakozaki, Fukuoka(812) Carboniferous Corals.
SUMI, Yasuo (f:fj ft~:=,R) Geol. Survey. japan,
135, Hisamoto, Takatsu-ku, Kawasaki (213)St.
SUMINOKURA, Yasuhiko (jl'jiJ~~) 108-308,
Kamigo-cho, Totsuka-ku, Yokohama (247)St., Coal. geol.
.SUNTHARALINGA\1, T., Geol. Sur. \Ialaya,
P. O. Box 1015, Ipoh, Malaysia, St.
*SUY ARI, Kazumi c;J!~'¥Ili:J) D. Sc., Dept.
Earth Sci., ColI. General Educ., Tokushima
Univ. Sanjima-cho, Minamijyo, Tokushima(770) St.
SUZUKI, Aleio (it;;j,jiJi.,t/iO D. Sc., Fac. Ed.
Utsunomiya Univ., 350, lvIinemachi, L'tsunomiya (320) St.
'SUZUKI, Keiji O~7;,jdill'il) D. Sc., 16-3, Korobiishi, \Vatari, Fukushima (960) PI.
SUZUKI, Koji (it*JiltPJ) D. Sc., Sci. Educ.
Dept., Fac. Educ., Yamagata Univ., 1-4-12,
Koshirakawa-machi, Yamagata (990) PForam., St.
SUZUKI, ~Iitsuo ut*=:~) Lab. Forest Bot.,
Fac. Agr., Univ. Tokyo, Yayoi-cho, Bunkyoku, Tokyo (113) PI. (Woods)'SUZeKI, Nobuo (it*JI!&P.!¥.) D. Sc., Hokkaido
Univ. Educ., Kushiro College, Shiroyama,
1-15-55, Kushiro-shi, Hokkaido (085) C-PI.
SUZUKI, Takayoshi Ot*3lt-:~D Tsukuba Univ.,
Sakuramura, Niihari-gun, Ibaraki Pref.
(300-31)·SUZUKI, Takeo, Dept. Geol. Univ. Calif.,
Los Angeles, Calif, 90024, U. S. A. CoMo.
SUZUKI, Tatsuo Cit*.i¥:=,R) 1-2216, Asagaya,
Minami, Suginami-ku, Tokyo (166)SUZUKI, Yasuhiro (it*(~'t.:) 3-17-4, Katayama, Niza, Saitama Pref. (352) St.
*TACHIBANA, Kouichi:rT~) D. Sc., 318-22, Ueda, :'vIorioka (020) Biost., Brach.
TADA, r-Iotohiko (~EB5C~) D. Sc., Mining& Civil Engineer. Dept., Fac. Tech., Iwate
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'TAIRA, Kazuhiro (:iIZ ~iJ1,.) D. Sc., Asahigawa College, Hokkaido Univ. Educ., Hokumon-hou, Asahigawa, Hokkaido (070) Isotope
geology.

(m'TAl, Yoshiro (~:Jki'JU~ro) D. Sc., Dept. Geol.,Fac. General Educ., Hiroshima Univ., 1-189, Higashisenda-cho, Hiroshima (730) CForam, CoSt.
'TAKAHASHI, Eitaro CI';:jiim~*un D. Sc.,1190-5, Kami-Koiji, Miyano-Shimo, Yamaguchi (753) M, C-PI.
'TAKAHASHI, Haruyuki (~j1fJjl'ilZ') D. Sc.,
Dept. Geol., Ibaraki Univ., Bunkyo 2-Chome,
Mito (310) M-Cephal., St.

456*T AKAHASHI, Kiyoshi (ir~jiilii ii!f) D. Sc.,
Dept. Geol., Fac. Liberal Arts, Nagasaki
Univ., 1-14, Bunkyo-machi, Nagasaki (852)M, C-Paly.
TAKAHASHI, Mutsumu (iwif,!jj ;fjl) 728, Miyoguchi, Komatsu-cho, Syuso-gun, Ehime Pref.
(799) Paly.
TAKAHASHI, Yutaka (i%m ~) Mishima
Kita High School, 1-3-18, Bunkyo-cho, tl'lishima (411)
TAKAOKA, Yoshinari (1%fi!iJ~nl1:) D_ Sc., 1515,
J osui-honcho, Kodaira (187) Fusul.
*T AKA Y AMA, Toshiaki (il'iillJ{~IlB) D. Sc.,
Fac. Gener. Educ_, Kanazawa Univ_, 1-1,
Marunouchi, Kanazawa (920) M,R-Nannopl.,
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*TAKAYANAGI, Yokichi G?iWIJi¥i5') D. Sc.,
Inst. Geol. & Paleont. Tohoku Univ., Aobayama, Sendai (980) M, C-Foram.
*T AKA YASU, Taisuke «(.1;j't.:~I!JJ) D. Sc., Inst.
Mining Geol., Mining ColI., Akita Univ., 1
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TAKECHI, Masami (Jl'I:~~H~) Yoshida Primary School, 18-43, Haruenishi-machi, Hiroshima (733) CoMo.
TAKEHARA, Hei-ichi (¥rJjj{lz-) D. Sc., 3-16,
Fukuhara, Showa-ku, Nagoya (466) CoSt.
T AKENAGA, Shigeo (JiI:7k1ll:*:) 374 HigashiKoiso, Oiso-cho, Naka-gun, Kanagawa Pref.
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TAKENAMI, Kaoru (il:;~Y4 ~) 7-108, Hinoshisakashitajutaku, 3-15, Shin-machi, Hino (191)
Education_
TAKETANI, Yojiro (¥rftP~=-ftr;) Inst. Geol.
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TAKEUCHI, Sadako (t'ri*J~T) D_ Sc., 3-9-12,
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T AKIZA WA, Shigeru (iFi'tiR ED c/o Sakamoto Katsumi, Yogaijiyutakumae Yatabecho, Tsukuba-gun, Ibaraki Pref. (300-21)
Conod_·TALET, -John A_ Ph. D., School of Earth
Sci., :\Iacquarie Univ., North Ryde, N_S_ W.
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T AMIYA, Ryoichi (ESE' Et-) 3-4-51, Ryo-cho,
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*T AMURA, Minoru (ERN ~) D. Sc., Fac_
Educ., Kumamoto Univ_, 2-40-1, Kurokami,
Kumamoto (860) Mo. (M-Bivalves)

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Geol., Fac_ Sci., Kyushu Univ., Hakozaki,
Higashi-ku, Fukuoka (812) Functional morphology, Pe., Cephal.
*TANAI, Toshimasa (fllij;jj:~*) D. Sc., Dept.
Geol. & Mineral., Fac. Sci., Hokkaido Univ.,
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*T ANAKA, Keisaku (If! cpJ2:~fO D. Sc., Geol.
Surv. Japan, 135, Hisamoto-cho, Takatsu-ku,
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TANAKA, Kunio (ESCPfl\!t:ffi) D. Sc., 3-8-26,
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TANAKA, Tetsuo (Eflcp'/fi"*:) Inst. Geol. Paleont., Fac. Sci., Tohoku U niv _, Aobayama,
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T ANEMORl, Masanori (JIiL:t*1<Ltm) 1081-23,
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TANEvIURA, Yoshihiro (fi.j:;JJiHf) Inst. Geol.
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*TATEIWA, Iwao (ft!{:;· !a.) D. Sc., 6-27-3,
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TATEMATSU, Yasuo (ftt1~*:) 3-17-106,
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TAZAWA, Jun-ichi (IIliRMi-) D. Sc., Inst.
Geol. & Paleont., Fac. Sci., Tohoku Univ.,
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*TOKUNAGA, Shigemoto (llRi7k~:5c) D. Sc.,
Nihon Hiryo Co., 2-1, Muromachi, Nihonbashi, Chuo-ku, Tokyo (103) Paly.
TOKUY AMA, Akira (llRilll 1:If:I) D_ Sc., Inst.
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.TOMITA, Yukimitsu UiHFl¥:J'[;) Dept. Geosci.
U nil'. of Arizona, Tucson, Arizona, 85721
U. S. A. CoVer.
TOMINAGA, Shinsaku (;~\ 7k:t1lH'p) NEW JEC
Hirakata-dormitory, 2-13-10, Nishikinya-cho,
Hirakata (573)
TOMIZA W A, Akifumi (1l;iRllB:;':O TechnicalResearch Center, Teikoku Oil Co., Ltd.,457
23-30, 9-Chome, Kita-Karasuyama, Setagayaku, Tokyo (157) C-Foram.
*TORIY AMA, Ryuzo Cf.l;t1J~g=) D. Sc., Fac.
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*TSUCHI, Ryuichi (± ~-) D. Sc., Geosci,
Inst., Fac. Sci., Shizuoka Univ., S36, Oya,
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TSUKANO, Zenzo (~!Ilt~it) D. Sc., 22-5-14,
Miyuki-cho, Sabae (916)
TSUMURA, Kohei (i1f!:tJ*"3fl) D. Sc., 14, Matsugaoka, Kanagawa-ku. Yokohama (221)
Diatoms.
TSUNADA, Koji (~EE*i'f]) 1-13-9, Zempukuji,
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*TSURUTA, Kinji (.B1~=-) D. Sc., 2-7-15,
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TSUDA, Karyu (i$EE*f1) D. Sc., 700, Terao,
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UCHIYA, Teiko (}1~jl:(T) Akita Commercial
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.UNIVERSITY OF NEW ENGLAND, Armidale,
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Geol. Inst., Fac. Sci., Univ. Tokyo, 7-3-1,
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458(990) C-Biost., Paly.
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Utsubohonmachi, Nishi-ku, Osaka (550) Ag.
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YOKOY AMA, Michiaki (1J'/IW~IIB) Inst. Geol

& Miner., Fac. Sci., Hiroshima Univ., 1-189, Higashisenda-machi, Hiroshima (736) PBrach.
YOKOY AMA, Tsuruo (1J'/Iw~m) D. Sc., Mining Sci., Tahara Fac., Onoda Cement Co.,
Ltd., 22, Toshima-abarasaki, Tahara-cho,Atsumi-gun, Aichi Pref. (441-34) St., Ag.
• YOON, Sun (:!J3"&It) D. Sc., Dept. GeoI., Coil.
Liberal Arts and Sci., Busan Natn. Univ.,
Busan, 607, Korea, Biost., C-Mo., Rg., Sd.
YOSHIDA, Fumio ('i!fB3~1'lIl) Godochosha
Geological Survey of Japan Osaka Branch,
6-25, Hoenzaka-cho, Higashi-ku, Osaka (540)*YOSHIDA, Saburo ('i!fB3:::':1'lII) D. Sc., Inst.
Earth Sci., Fac. Educ., Yamagata Univ., 33-27, Odachi, Yamagata (990) Micropaleont.
(Foram.)YOSHIDA, Shinji ('i!fB3fT=) D. Sc., Dept.
Earth Sci., Aichi Univ. Educ., Kariya, Aichi
Pref. (448) C-St., Gp.
YOSHIDA, Takashi ('i!fB3 i'Jij) Geological
Survey of Japan, 135, Hisamoto, Takatsu-ku,
Kawasaki (213) Conod. Tg.
YOSHIMOTO, Yuichi ('i!f*rif-) YoshidaManshon-305, 2-1-21, Tomizuka, Sendai(982)
YOSHINO, Michihiko ('i!f!f~~) 1-44, Sakaecho, Iwakura (482) Hg. Palynology.
YUI, Seiji (m;tt:~=) 203 Miyata Bldg. 1-6-2,
Showa-machi, Kita-ku, Tokyo (114) Mo.,
Ecoi.
ZINBO, Noboru (f!t!fJi!: J8!;) D. Sc., 62, lizukamachi, Yamagata (990)

a~'~i.~~~~~·;c.t
Transactions and Proceedingsof thePalaeontological Society of Japan
New Series
N o. 105", o. 112
1977-1978

Palaeontological Society of Japan

The heading in japanese commemorates the handwriting ofProf.

Matajiro

YOKOYAMA, father of japanese palaeontology, who was a professor of stratigraphy
and palaeontology at the Geological Institute, Imperial University of Tokyo.
The fossil on the cover: Original figure of Podozamites Reinii GEYLER,
1877, from the Tetori group. GEYLER'S description marked the onset ofmodern palaeontology in japan.

CONTENTS

Number 105 ( Published A pril 30. 1977)
T ranscat ion s

Arti cle
672.

Page

Pl ate1-16

1,2

notes on t he Manch urocaratidae and the Ma nchurocera s pro vin ce .. 17-26

3,4

KOBAYAS HI, Fumio:

Some considerations on th e ancestor of t he

fam il y Verbeekinidae (Fu s ulinacea ) .... . . ........................

673.

KOBAYASHI, Teiich i:

Manchuroceras found in So uth Korea w ith

674. HAYAM I, Ita ru and j ODA, l\![asayuki:

Notes on the morphology of

Neilhea (Cretaceous pectin ids) with taxonom ic rev ision of Japa nese
species . ...... ... .. .... , ..... . . .. . . . . . . . .... . ........ . ........ . . . 27-54
Proceedings

5,6. . . ......... . . . .. ... . . .. . . . . . . . .. .... . . . .... 55-60

Numbe r 106 ( Pu blish ed June 30, 1977)
Transactions

675.

KO NDA, Isao, iVIATSUOKA, Kaz umi , NISHIM URA, A kira and OH NO,
Terufumi :Nummulite s boninen sis HANZAWA from the A mami

Pla teau in the nor t hern margin of the Phili ppine Sea . . . ..... . . . . 61-70

676.

T AKAI-I AS HJ, Ki y os hi:

cepc ion Formation , central Chi le . . . . . .... . . . ... . . . .............. 71-88

677.

7,8

Palynology of th e Lowe r Tert iary Con-lco, Hisa yoshi and Ic o, Hisaharu:

9-12Uppe r Permian fusu lin aceanscontained in t he pe bbles of th e basal cong lomerate of the Ado ya ma

89-99

13, 14

monites from Bisho, Kumamoto Prefecture, K y ushu . .. . .. . . ... . . . 100-105

15

Formation , K uz u, Tochi g i Prefectus, J apan

678.

HIR ANO, Hiromic hi and SANO, Hiro yoshi:

679.

IWASAKI, Yasuhide and ONO, Susumu:

Middl e J urassic am -A molluscan assemblage of

the Setogawa Group .... . ...... . . .... . .. . ... . . . ............... . . 106- 121
Proceedings

16.. .. .. . . ... .. .. .. . .. . . . . .. . . . . ...... ..... . . . 122-124

Number 107 (Publi shed September 15, 1977)
Transactions

680.

KOB AYASHI, Teiichi:

An occurre nce of Ordo socera s in J ehol , north-east Ch ina, and a note on the Po lydesmiidae .. ..... .. .. . .. .. . ... 125-134 17,18

ii

681.

Y A~IAGUCHI, Toshiyuki: Taxonomic studies on some fossil andrecent japanese Balanoidea (Part 1) .............................. 135-160 19-22
Number 108 (Published November 15, 1977)
Transactions

682.

YAMAGUCHI, Toshiyuki: Taxonomic studies on some fossil and

683.

HAYAMI, Itaru, MAEDA, Shiro and FULLER, Carlos Ruiz: Some Late

recent japanese Balanoidea (Part 2) .............................. 161-201

23-27

Triassic Bivalvia and Gastropoda from the Domeyko Range ofnorth Chile ...................................................... 202-221
Proceedings

28-30............................................ 222

Number 109 (Published April 30, 1978)
Transactions

684.

KOBA YASI-II, Teiichi: Discoactilloceras and the Discoactinoceratidae,
fam. nov ......................................................... 223-234 31,32

685.

HIRANO, Hiromichi:

Phenotypic substitution of Gaudryceras (aCretaceous ammonite).......................................... 235-258

686.

KIMURA, Tatsuaki and SEKlDO, Sinji:

33-35

Addition to the Mesozoic

plants from the Akaiwa Formation (Upper Neocomian), the Itoshiro
Group, central Honshu, Inner Zone of japan ...................... 259-279

687.

36-38

MATSUMOTO, Tatsuro and MURAMOTO, Kikuwo: Further notes on
Vascoceratid ammonites from Hokkaido (Studies of the Cretaceousammonites from Hokkaido and Saghalien-XXXIII) .............. 280-292
Proceedings ............................................ 293-296
Number 110 (Published june 30, 1978)
Transactions

688.
689.

OKUDA, Hisashi and YAMAGIWA, Nobuo: Triassic corals from Mt.
Daifugen, Nara Prefecture, Southwest japan .................... 297-305 40,41
MATSUMOTO, Tatsuro and HARAGUCHI, Yoshimitsu:
A new
Texanitine ammonite from Hokkaido (Studies of Cretaceous ammonites from Hokkaido and Saghalien-XXXIV) .................. 306-318

690.

T ASI-IIRO, i\1asayuki:

42

On some interesting bivalves from theCretaceous Himenoura Group in Kyushu........................ 319-329 43,44

Proceedings ............................................ 330-332

iii

Number III (Publis hed September 30, 1978)
Transactions

69l.

YANG, Seong Young: Ontogeneti c va ri ation of T rigonioides (s. s.)
paucisulcatus (Cretaceous non-marine Bi val via) .................... 333- 347 45,46

692.

Hu, Chung-Hung:693.

SHUTO, Tsugio : On the ge nera Sip/wno/usus and Euthria of the

Ontogenies of four Uppe r Cambrian tri lobitesfrom the Bonn eterre Dolomite, fVlissouri ... . . . ............. . ... . .. 348- 357

47,48

Indo- West Pacific .... . .. . . . . . .... . .... . ... . . ......... . . . ...... . 358- 369
Proceed ings..... . . . .. . .. ........ .. .. . .. .. . .. .. . . ....... 370

N umber 11 2 (Published Decem be r 30, 1978)
Transactions

694.

Y AJ IMA, Michiko:

Quaterna r y ostracodes from

Kisarazu near

Tokyo . .. ....... . . . ...... ..... . ................ . . . " . ... . . . . . ... 371 -409

695.

49,50

HlRANO, Hiromi c hi , MIK AMI , Takahiko and iVIr YAGAW A, Hideki:
Lower Jurassic ammonites from the I-lig ich i Group, South wes t
Japan .. . ....... . . . ... . . . .. .... .. .. . . . . . . ... . .. .. . ..... . . . .. . . . . 410-416

696.

OTSUKA, Masao:

wood, Amakusa, Kumamoto Pref. , Japan . . ....... . .. . .. . ...... . .417-423

697.

51

A n ew spec ies of Ba7l/?ia in Pal eoge ne fossil

T ASHIRO, Masa yuki:

New species of AIJiolrigonia a nd Senis f rom

the Up permost Cretaceous of I-Io kka ido .. . . ... . . ... .. . . ... .. .. . . . 424- 433
Proceedings

52,53.. ...... . ..... . ..... . ...... . . ... . . . . . . . . .. . .434-435

Systemat ic Inde x . ....... . . ..... . .. . .. . ... . ..... ... . ... . . . ..... . ....... 436-437
In de x of Families, Genera and Speci es.......... . . . . . .... . . ....... . .. .438-440

54

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Transactions and Proceedings of the PalaeontologicalSociety of Japan

Dec. 30, 1978

New Series No . 112

CONTENTST RANSACTIONS694.

Y AJIMA, Michiko:695.

HIRANO, Hiromichi, MIKAMI, Takahiko and MIYAGAWA, Hideki : Lower Juras-

Quaternary ostracodes from Kisarazu near Tokyo .. . . . . 371

sic ammonites from the Higichi Group, Southwest Japan
696. OTSUKA, Masao:...

. . .. 410

A new species of Banhia in Paleogene fossil wood, Ama-

kusa, Kumamoto Pref., Japan. . ..... .... . .. . .. . .. . . . .
697. TASHIRo, Masayuki:. . . ..... 417

New species of Apiotrigonia and Senis from the U p........

. . . . . . . . .. 424

PROCEEDINGS . .. .. . . . . .. .. . .. . . ..... . . . . . . . .. .. . . . . . . . . . . . .

434

permost Cretaceous of Hokkaido ..