Smaller Foraminifera 

From Guam

GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1
Smaller Foraminifera 

From Guam

By RUTH TODD

GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1

Four hundred and fifty-three species, subspecies, 

and varieties (one species new) from upper Eocene, 

lower Oligocene, Miocene, and Recent deposits

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1966
UNITED STATES DEPARTMENT OF THE INTERIOR 

STEWART L. UDALL, Secretary

GEOLOGICAL SURVEY 

William T. Pecora, Director

For sale by the Superintendent of Documents, U.S. Government Printing Office 

Washington, D.C. 20420 - Price 75 cents (paper cover)
CONTENTS

Abstract _______ __ _____

Introduction _________ _ _ ___

Analyses of faunas ____ __ _ ___

Eocene, Tertiary &___ __ ___

Recent __ _________

Page 

____________ 11

___ __ ______ 1

____________ 1

__ ___ ____ 1

--______-___ 3

____________ 7

____________ 12 Index

Page 

113

23

23

33

34

35

37

ILLUSTRATIONS

[Plates 1-19 follow index]

PLATE 1. Foraminifera from the Eocene of Guam.

2. Planktonic Foraminifera from the Eocene of 

Guam.

3. Species of Globorotalia from the Eocene of Guam.

4. Benthonic Foraminifera from the Oligocene of 

Guam.

5. Buliminidae from the Oligocene of Guam. 

6, 7. Benthonic Foraminifera from the Oligocene of

Guam. 

8. Planktonic Foraminifera from the Oligocene of

Guam.

9, 10. Species of Globigerina from the Oligocene of 

Guam.

11. Planktonic Foraminifera from the Oligocene of 

Guam.

12. Benthonic Foraminifera from the Miocene of 

Guam.

PLATE 13. Cassidulinidae and Rotaliidae from the Miocene 

of Guam.

14. Planktonic Foraminifera from the Miocene of 

Guam.

15. Cassidulinidae, Globigerinidae, and Globorotaliidae from the Miocene of Guam.

16. Species of Globorotalia from the Miocene of 

Guam.

17. Hyperamminidae, Placopsilinidae, Valvulinidae, 

and Miliolidae from Recent sediments around 

Guam.

18. Lagenidae, Buliminidae, Elphidiidae, Discorbidae, and Cassidulinidae from Recent sediments around Guam.

19. Pegidiidae, Rotaliidae, and Anomalinidae from 

Recent sediments around Guam.

Page 

FIGURE 1. Localities of Eocene, Oligocene, and Miocene smaller Foraminifera studied from Guam-__________________ 18

2. Speculative correlations between planktonic Foraminifera zones, the European time scale, and the Indonesian

letter classification.____________________________________________________________________________ 22

TABLES

TABLES 1-3. Distribution of smaller Foraminifera 

1. In the Eocene of Guam_ ___________________

2. In the Oligocene of Guam__________________

3. In the Miocene of Guam___________________

4. Distribution of Recent Foraminifera around Guam.

Page

12

6

11

14

III

GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

SMALLER FORAMINIFERA FROM GUAM

By RUTH TODD

ABSTRACT

Rich assemblages of smaller Foraminifera are tabulated from 

two samples representing the upper Eocene, four samples representing the lower Oligocene, and seven samples representing the 

Miocene; some of the species are illustrated. A late Eocene 

(Tertiary &) age for part of the Alutom Formation is supported 

by the planktonic species of the f oraminif eral population. Abundant planktonic Foraminifera in the Mahlac Member of the 

Alutom Formation permit correlation of the Mahlac Member 

with the GloMgerina sellii zone of early Oligocene age, which 

was described from East Africa.

The hiatus between Oligocene and Miocene is marked by a 

major faunal change in which more than 40 percent of the 

Oligocene assemblage became extinct. The Miocene assemblage 

from the Janum Formation is similar in species and in paleoecology to modern sediments around Guam. Although larger 

Foraminifera indicate a probable age of Tertiary g for part of the 

Janum Formation, the evidence of the planktonic Foraminifera 

favors an age of Tertiary /.

Because the correlation of the planktonic Foraminifera zonation with the Oligocene-Miocene boundary and with the European time scale has been altered during the past decade, it is 

necessary to correct two of the age assignments originally made. 

The Donni Sandstone Member of the Tagpochau Limestone of 

Saipan is now considered as approximately Tortonian (Tertiary /) and the Globifferinatella insweta/Globigerinoicles Mspherica zone on Saipan and Yap is considered as early Miocene 

(Aquitanian and Tertiary e). Correlation of the Janum Formation is based chiefly on GloMgerina nepenthes, and the age of 

the Janum is estimated to be slightly younger than that of the 

Donni, but still approximately Tortonian in part.

Study of species from beaches, reefs, lagoons, channels, and 

outer slopes around Guam provides a basis for paleoecologic 

interpretation of moderately deep outer-slope deposition in the 

three formations studied.

INTRODUCTION

This paper records the assemblages and illustrates 

some of the species of smaller Foraminifera characteristic of three different ages of sedimentary rocks on 

Guam: late Eocene (Tertiary 6) in the Alutom Formation, early Oligocene (Tertiary c) in the Mahlac Member of the Alutom Formation, and Miocene (Tertiary 

f or g) in the Janum Formation. The Foraminifera 

found in the beach sands, on the reefs, in the lagoons 

and channels, and on the outer slopes around Guam, 

are also recorded.

The several assemblages here discussed are compared 

with those of comparable ages and ecology that have 

already been described from the nearby island of Saipan, about 120 miles north-northeast of Guam (Todd, 

1957). Comparisons are also made with Recent and fossil assemblages described from several islands of the 

Marshall Island group, particularly Eniwetok and 

Bikini, respectively some 1,150 to 1,350 miles east of 

Guam (Cushman and others, 1954; Todd and Post, 

1954; Todd and Low, 1960).

I am grateful for helpful advice, discussions, and 

suggestions received from many colleagues during the 

course of my work. Doris Low worked with me and 

gave invaluable assistance in the preparation of the 

material for study and the tabulation of results. The 

drawings are the work of Elinor Stromberg.

ANALYSES OF FAUNAS 

EOCENE, TERTIARY b

The Eocene is represented by only two samples: Ei 4-1 

and Jl 2-1. In both these samples from the Alutom 

Formation of late Eocene and Oligocene age, planktonic 

specimens are noticeably predominant, and the benthonic specimens, although comprising a larger number 

of species, are few. Because of this predominance of 

the planktonic element, both samples are interpreted as 

relatively deep water deposits, such as are currently 

being deposited on the outer slopes of Guam.

The interpretation of the age of the foraminiferal 

assemblage is based upon several considerations. First, 

the two most abundant planktonic species, Globorotalia, 

centralis Cushman and Bermudez and Globigerapsis 

index (Finlay), indicate middle or upper Eocene (Bolli, 

195Tc, text fig. 26 [range chart]).

Second, both samples contain rare specimens of the 

Eocene genus Hantkenina. Sample Ei 4-1 contains 

Hantkenina alabamensis Cushman, and in sample Jl 2-1, 

both H. alabamensis and H. inflata Howe are present. 

Both of these species are reported in the upper Eocene, 

and H, alabamensis is reported to range also into the 

middle Eocene, at least sporadically (Thalmann, 1942, 

table 1).

II
12 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

Third, several other planktonic forms from these 

two samples, all rare, also have restricted ranges, as 

follows: GloborotaHa spinulosa Cushman and G. spinuloinflata (Bandy) are both reported (Bolli, 1957c, text 

fig. 26 [range chart]) to be confined to the middle 

Eocene. Globorotalia wilcvxensis Cushman and Ponton 

is reported (Bolli, 1957a, text fig. 11 [range chart]) to 

be restricted to the lowermost Eocene. Still other planktonic species, also rare, are less narrowly restricted but 

do include the Eocene within their ranges. They are 

Globigerina pera Todd and G. yeguaensis Weinzierl and 

Applin, which range from middle Eocene to but not into 

the Chattian, Globigerina gortanii (Borsetti), which 

ranges from upper Eocene to but not into the Chattian 

(Eames and others, 1962, text fig. 20 [range chart]), 

and Globigerina venezuelana Hedberg, which ranges 

from middle Eocene upward throughout the Oligocene 

and Miocene (Bolli, 1957b; 1957c, text figs. 18,26 [range 

charts]).

In spite of the apparent restriction of a few of the 

rarer Eocene planktonic species to middle and lower 

Eocene, I believe the age of these two samples from 

the Alutom Formation can be best interpreted as late 

Eocene.

Among the benthonic species, only a few appear to 

have restricted stratigraphic ranges. Of these, the following support the late Eocene age that is indicated by 

the planktonic specimens. An asterisk indicates species 

that seem to have become locally extinct after the 

Eocene.

Significant benthonic Foraminifera in the Eocene samples of 

the Alutom Formation

Species 

Alabamina conica Todd_

Bulimina semicostata Nuttall.

* Bulimina tuxpamensis 

Cole.

Cibicides havanensis Cushman and Bermudez.

*Cibicides macrocephalus 

(Giimbel).

*Cibicides tuxpamensis 

Cole.

*Eponidcs ocalanus Cushman.

*Neorotalia floscula (Todd 

and Post).

Reported occurrences elsewhere

Upper Eocene, Densinyama and 

Hagman Formations of Saipan.

Upper Eocene of Saipan ; lower Eocene of California ; Eocene, Guayabal Formation of Mexico; and 

Eocene of Cuba.

Upper Eocene of Saipan; Eocene, 

Chapapote Formation of Mexico ; 

Eocene of Cuba and Dominican 

Republic ; Oligocene of Trinidad; 

Mioeene and Eocene of Spain ; 

Eocene of Italy.

Eocene of Cuba; middle and upper 

Eocene and lower Oligocene of 

Barbados.

Upper Eocene of Eniwetok ; Eocene 

of Bavaria.

Eocene, Aragon and Chapapote Formation of Mexico; lower Oligocene, Alazan Formation of Mexico ; lower Oligocene of Dominican 

Republic.

Upper Eocene of Eniwetok ; upper 

Eocene of southeastern United 

States.

Eocene and Oligocene of Bikini and 

Eniwetok.

Pleurostomella cubensis 

Cushman and Bermudez.

Significant benthonic Foraminifera in the Eocene samples of

the Alutom Formation Continued 

Species Reported occurrences elsewhere 

*Nwttallidcs frumpy i (Nut- Paleocene and Eocene of mid-Pacific 

tall). Mountains; Eocene, Guayabal

Formation of Mexico; Eocene of 

Trinidad, Haiti, and Barbados; 

Oligocene of Cuba; Oligocene of 

the Apennines; Eocene of Czechoslovakia ; Tertiary of the Caucasus ; Paleocene and Danian of 

the Crimea; Eocene of New 

Zealand.

Eocene of Cuba; Eocene and Oligocene of Trinidad ; Eocene of Mississippi ; Eocene in submarine 

core off northeastern United 

States; Eocene of central Seran 

Indonesia.

The remaining benthonic species are either wider 

ranging or are too poorly preserved to be identified 

with certainty. A few, such as Oridorsalis umbonatus 

(Reuss) and Osangularla cutter (Parker and Jones), 

appear to have ranges extending from Eocene to Eecent.

Table 1 gives the species found in the two Eocene samples of the Alutom Formation.

TABLE 1. Distribution of smaller Foraminifera in the Eocene of

Guam

Species

Valvulinidae:

Valvulina martii Cushman and Bermudez 

Miliolidae:

Triloculina sp. B____________________ _ _

Lagenidae:

Robulus sp ______________________________

Vaginulinopsisl sp _______________________

Dentalina? spp_ _ _ ______________________

Nodosaria affinis Reuss?_ _________________

Chrysalogonium longicostatum Cushman and 

Jarvis ________________________________

Buliminidae:

Bulimina semicostata Nuttall ____________ __

tuxpamensis Cole ____________________

Bolivina choctawensis Cushman and McGlamery ?.._ ____________________________

Orthomorphina parvula Todd, n. sp_________

rohri (Cushman and Stainfor th) _______

Stilostomella nuttalli (Cushman and Jarvis)?__ 

subspinosa (Cushman)_ _ ______________

verneuili (d'Orbigny). ________________

Ellipsoidinidae:

Pleurostomella cubensis Cushman and Bermudez__ ______________________________

Ellipsoglandulina labiata (Schwager ) _______

Discorbidae:

Rosalina sp. ----------------------------

Rotaliidae:

Gyroidina nitidula (Schwager) _____________

Eponides ocalanus Cushman ______________

Oridorsalis umbonatus (Reuss) _____________

Nuttallides trumpyi (Nuttall) ______________

V alvulineria? sp -------------------------

Stomatorbina torrei (Cushman and Bermudez) 

Osangularia culler (Parker and Jones) _______

Alabamina conica Todd_ __________________

Neorotalia floscula (Todd and Post) ________

Amphisteginidae :

Asterigerina marshallana Todd and Post____ 

Amphistegina bikiniensis Todd and Post_-__

Localities

Ei 4-1 Jl 2-1

X

X
SMALLER FORAMINIFERA FROM GUAM 13

TABLE 1. Distribution of smaller Foraminifera in the Eocene of 

Guam Continued

Species

Cymbaloporidae: 

Halkyardia bikiniensis Cole

Nonionidae: 

Nonion maoricum (Stache)

Anomalinidae : 

Cibicides floridanus (Cushman) _

havanensis Cushman and Bermudez____

Planorbulinidae : 

Gypsina globula (Reuss) -

Rupertiidae: 

Carpenteria hamiltonensis Glaessner and

Globigerinidae:

pera Todd _____ _

yeguaensis Weinzierl and Applin _ _ _

Hantkeninidae : 

Hantkenina alabamensis Cushman _

Globorotaliidae : 

Globorotalia centralis Cushman and Berspinulosa Cushman

Localities

E14-1

X 

X

X 

X 

X

X 

X

X 

X 

X 

X

J12-1

X 

X

X 

X 

X

X

X 

X

"XX 

X 

X

X

X

OLIGOCENE, TERTIARY c

Tertiary c beds are represented by four samples from 

the Mahlac Member of the Alutom Formation. The 

assemblages in two of these samples, Hi 6-1 and Gj 

13-1, are very rich and well preserved.

A few species are identical with those in the Eocene 

fauna, but the Oligocene assemblages are much richer 

than those of the Eocene and include more than 2i/£ 

times as many species. Like the Eocene samples, these 

Oligocene ones are predominantly composed of planktonic specimens. Therefore, I intrepret them as from 

the outer slope, probably from moderately deep deposits.

Again, as in the Eocene samples, the interpretation 

of age is based primarily on the planktonic assemblages.

The planktonic assemblage is more varied than that 

in the Eocene samples. The most narrowly restricted 

forms are Globigerina sellii (Borsetti) and Globigerina 

tripartita Koch tapuriensis Blow and Banner, whose 

ranges are indicated (Eames and others, 1962, text 

fig. 20 [range chart]) to be restricted to Lattorfian and 

Rupelian.

Globigerina ampliapertura Bolli, G. gortanii (Borsetti), G. increbescens Bandy, G. senilis Bandy, G. 

yeguaensis Weinzierl and Applin, and Cassigerinella 

chipolensis (Cushman and Ponton) all include the 

Lattorfian-Rupelian in their ranges. Globigerina ampliapertura ranges slightly higher and slightly lower; 

G. gortanii, G. increbescens, and G. senilis range lower 

but no higher; G. yeguaensis ranges much lower but no 

higher; and Cassigerinella chipolensis ranges much 

higher but no lower (Eames and others, 1962, text fig. 

20 [range chart]). Globigerina dissimilis Cushman 

and Bermudez, G. suteri (Bolli), and G. venezuelana. 

Hedberg are all reported (Bolli, 1957b; 1957c, text figs. 

18, 26 [range charts]) as having long ranges, extending 

from Eocene to Miocene. Globigerina opima nana 

(Bolli) is reported as ranging no higher than Oligocene 

in Trinidad (Bolli, 1957b, text fig. 18 [range chart]) 

but as having a long range, from Eocene to Miocene, 

in East Africa (Eames and others, 1962, text fig. 20 

[range chart]). In either interpretation, its range does 

include the Lattorfian-Rupelian. Globigerina danvillensis Howe and Wallace and Globigerinella danvillensis (Howe and Wallace) (originally described under 

N onion] were both first described from the Jackson 

Eocene at Danville Landing, La. Both have been reported from other areas, mostly in the Eocene but also 

in the lower Oligocene. Chiloguembelina cubensis 

(Palmer), described from the upper Eocene and lower 

Oligocene of Cuba, is reported (Beckmann, 1957, text 

fig. 16) to extend the upper part of its range into the 

Globigerina ampliapertura and Globorotalia opima 

opima zones of the Oligocene in Trinidad.

In consideration of the ranges reported for the various planktonic species found in the four Oligocene samples, it may be said with a fair amount of confidence 

that the age of the samples falls somewhere in the Lattorfian or Rupelian and also within the Globigerina 

sellii zone (Blow and Banner, 1962, p. 68, text fig. 20 

[range chart]).

Probably the closest known assemblage (both in 

faunal similarity and geographic distance) to this one 

from the Alutom Formation is the one reported from 

Lindi in Tanganyika on the east coast of Africa (Blow 

and Banner, 1962).

The finding of a single specimen of the Eocene genus 

Hantkenina in the Oligocene sample Hi 6-1 throws 

doubt on the inclusion of this sample with the other 

three of Oligocene age. In spite of diligent search for 

additional specimens of Hantkenina to confirm its occurrence in Hi 6-1, no more specimens were found, and 

it was concluded that the single specimen was redeposited from older beds. Moreover, evidence of reworking in Hi 6-1 has already been reported by Cole 

(1963, p. E4 and table 1) who found Eocene larger 

Foraminifera in this sample.

The lack of Globigerina sellii (Borsetti), the zone 

fossil that is reported to be limited to the zone, throws 

further doubt on the precise correlation of sample Hi
14 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

6-1 with the other three samples, Gj 13-1, Gj 11-1, 

and Gj 14-1, that are assigned to this zone. The further circumstance that sample Hi 6-1 contains three 

additional planktonic species, namely Globigerina danvUlensis Howe and Wallace, G. yeguaensis Weinzierl 

and Applin, and Globigerinella danvittensi-s (Howe 

and Wallace), none of which are found in any of the 

other three Oligocene samples and all of which have 

ranges extending farther downward than upward from 

the lower Oligocene, is yet another point in favor of 

differentiating sample Hi 6-1 from the remaining three 

Oligocene ones. The recognition in sample Hi 6-1 

of forms transitional between Globigerina ampliapertura Bolli and Globorotalia centralis Cushman and 

Bermudez forms identical with some illustrated from 

the highest Eocene zone in Trinidad is an additional 

point in favor of interpreting Hi 6-1 as slightly older 

than the Globigerina sellii zone.

Nevertheless, in spite of the fact that the previously 

discussed points favor a pre-early Oligocene age for 

sample Hi 6-1, there are some weighty reasons for including it with the Oligocene rather than with the 

Eocene, as follows: First, the presence of Cassigerinella 

chipolensis (Cushman and Ponton) in abundance favors 

Oligocene age because this genus has not been reported 

in the Eocene. However, the question of exclusion of 

Cassigerinella from the Eocene is currently under debate 

owing to Tsunemasa Saito's finding (written commun., 

Jan. 10, 1964) of some small specimens of it in a deepsea core in the Atlantic off Florida where it was reported 

in association with undoubted Eocene planktonic 

Foraminifera. Second, the presence of many species 

characteristic of the lower Oligocene, such as Bolivina 

l>eyrichi Reuss, B. fastigia Cushman, B. olig<ocaenic\a 

Spandel, B. vicksburgensis (Howe), Angulogerina 

byramensis (Cushman), A. vicksburgensis Cushman, 

Asteri.gerinata bracteata (Cushman), and Pararotalia 

byramensis (Cushman), favors the inclusion of Hi 6-1 

with the other Oligocene samples. Third, the almost 

total dissimilarity of the planktonic assemblage of Hi 

6-1 and the Eocene planktonic assemblage from the 

Alutom Formation, with only 3 of the 11 species in Hi 

6-1 identical with 3 of the 9 species in the Eocene, also 

favors the placement of Hi 6-1 in the Oligocene rather 

than in the Eocene. Furthermore, of the three species 

that are identical in the two dissimilar assemblages, one, 

Globigerina gortanii (Borsetti), is represented by only 

a single specimen in the Eocene, whereas it is common 

in the Oligocene, and the other two, Globigerina venezuelana Hedberg and G. yeguaensis Weinzierl and 

Applin, are long-ranging forms. Moreover, the major 

constituents of the Eocene assemblages Globigerapsis 

index (Finlay) and Globorotalia centralis Cushman and

Bermudez are totally lacking in sample Hi 6-1, 

whereas the major constituents of Hi 6-1 are Globigerina venezuelana Hedberg, G. gortanii (Borsetti), 

and G. ampliapertura Bolli.

It is therefore concluded that sample Hi 6-1 is early 

Oligocene in age, probably slightly older than the other 

three lower Oligocene samples. The presence of the 

single specimen of Hantkenina inflata Howe can be interpreted either as a redeposited specimen or as an 

example of extension of the Eocene genus across the 

Eocene-Oligocene border. Such reported upward extensions of Hantkenina are not unknown. (See Thalmann, 1942, p. 817-818, tables 1, 2.)

The benthonic parts of the Oligocene samples are 

much richer, more varied, and more abundant than the 

benthonic parts of the Eocene samples. Among the 

benthonic species, a considerable number have variously 

restricted stratigraphic ranges, and these ranges support the interpretation of early Oligocene (Tertiary <?) 

age for these four samples of the Mahlac Member of the 

Alutom Formation. All the species given below seem 

to have become locally extinct after the Oligocene. 

Others may also have become extinct, but their identification is questionable or tentative, or they are so closely 

allied to other (later) species that their extinction 

should not be assumed.

Significant benthonic Foraminifera in Oligocene samples from 

the Mahlac Member of the Alutom Formation

Reported occurrences elsewhere

Upper Eocene, Densinyama and 

Hagman Formations of Saipan.

Eocene of Japan; Eocene of Washington; middle Eocene of California.

Oligocene of Mexico, Venezuela, 

Trinidad, Alabama, Mississippi, 

and Texas.

Eocene of Saipan; Eocene of Oregon ; upper Eocene of Mississippi, 

Georgia, and South Carolina; 

Eocene of Maryland; upper Oligocene of Puerto Rico.

Eocene of Saipan ; Eocene of Georgia ; lower Oligocene of Mississippi and Alabama; middle Oligocene of Dominican Republic.

Eocene of Hungary, Netherlands, 

Italy, and Egypt; Eocene-Oligocene of U.S.S.R

Oligocene of Eniwetok; Oligocene 

of Texas, Mississippi, and Alabama ; lower Oligocene of 

Ukraine.

Miocene of Saipan.

Oligocene of Germany; Eocene of 

Hungary.

Upper Oligocene of Germany; Oligocene of Belgium.

Upper Eocene of Alabama, Georgia, 

and Maryland.

Oligocene of Germany.

Oligocene of Germany and France.

Species 

Alabamina conica Todd__ 

Amphimorphina californica Cushman and McMasters.

Angulogerina byramensis 

(Cushman).

Angulogerina cooperensis 

Cushman.

Angulogerina vicksburgensis Cushman.

Anomalina granosa (Hantken).

A sterigerinata 

(Cushman).

bracteata

Baggina parva Todd______

Bolivina beyrichi Reuss__

Bolivina fastigia Cushman.

Bolivina gardnerae Cushman.

Bolivina cf. B. minutisslma Spandel.

Bolivina oligocaenica 

Spandel.
SMALLER FORAMINIFERA FROM GUAM 15

Significant benthonio Foraminifera in Oligocene samples from 

the Mahlac Member of the Alutom Formation Continued

Species

Bolivina plicatella mera 

Cushman and Ponton.

Bolivina tumida Oushman. 

Bolivina vicJcsburgensis 

(Howe).

Bolivinopsis cubensis 

(Cushman and Bermudez).

Bulimina alazanensis 

Cushman.

Bulimina bleeckcri Hedberg.

Bulimina semicostata Nuttall.

Caucasma grata (Parker 

and Bermudez).

Chilostomella cyclostoma 

Rzehak.

Chrysalogonium ciperense 

Cushman and Stainforth.

Chrysalogonium lanceolum Cushman and JarChrysalogonium longicostatum Cushman and 

Jarvis.

Chrysalogonium tenuicostatum Cushman and 

Bermudez.

Cibicides havanensis 

Cushman and Bermudez.

Cycloloculina cubensis 

Cushman and Bermudez.

Ellipsoglandulina labiata 

(Schwager).

Eponides duprei ci.ervoensis Cushman and Simonson.

Eponides kiliani (Andreae).

Halkyardia bikiniensis 

Cole.

Nodosarella robusta Cushman.

Reported occurrences elsewhere

Miocene of Florida; Oligocene of 

Texas; Tertiary of Dominican 

Republic.

Miocene of California.

Oligocene of Eniwetok; lower Oligocene of Mississippi and Alabama.

Upper Eocene of Cuba ; Eocene and 

Oligocene of Trinidad.

Oligocene of Mexico, Cuba, Trinidad, and Dominican Republic; 

Eocene of California, Cuba, and 

Trinidad; Oligocene and Miocene 

of the Virgin Islands; mid-Tertiary of Venezuela; Aquitanian 

of northern Colombia; Miocene 

of Majorca; Aquitanian of Italy.

Oligocene of Venezuela, Cuba, Dominican Republic, Trinidad, and 

Texas; Aquitanian of northern 

Colombia.

Eocene of Saipan; Eocene, Guayabal Formation of Mexico; Eocene 

of California and Cuba.

Eocene of Cuba, Trinidad, and California ; Oligocene of Trinidad; 

upper Eocene and lower Oligocene of Barbados.

Eocene of Saipan; Oligocene of 

Austria.

Oligocene of Trinidad.

Oligocene of Trinidad; Eocene of 

Cuba and Trinidad; Miocene of 

Jamaica, Dominican Republic, 

and Majorca; middle Eocene to 

lower Oligocene of Barbados.

Oligocene of Trinidad and Dominican Republic; upper Eocene and 

lower Oligocene of Barbados; 

Miocene of Majorca; lower Miocene of Algeria.

Eocene of Cuba and Trinidad; Oligocene of Trinidad and Dominican Republic; middle Eocene to 

lower Oligocene of Barbados; 

Miocene of Majorca.

Eocene of Cuba; middle Eocene to 

lower Oligocene of Barbados.

Eocene of Cuba; middle Oligocene 

to lower Miocene of Puerto Rico.

Miocene of Kar Nicobar; Eocene of 

Saipan; lower Oligocene of Mexico and California; Eocene and 

Oligocene of Trinidad; Eocene of 

Ecuador; middle Eocene to lower 

Oligocene of Barbados; upper 

Miocene of Dominican Republic ; 

Miocene of Majorca and Spain ; 

Oligocene of Italy.

Oligocene, Tumey Formation (of 

Atwill, 1935) of California; Eocene, Oligocene, and Miocene of 

Eniwetok.

Miocene of Saipan; Oligocene of 

Alsace.

Oligocene of Bikini; Eocene and 

Oligocene of Eniwetok.

Miocene ? of Virgin Islands; Eocene 

and Oligocene of Trinidad; middle Eocene to lower Oligocene of 

Barbados.

Nodosarella subcylindrica

Cushman. 

N onion maorioum

( Stache). 

Nonion micrum Cole______

Pararotalia byramensis 

(Cushman).

Pleurostomella bierigi 

Palmer and Bermudez.

Significant benthonic Foraminifera in Oligocene samples from 

the Mahlac Member of the Alutom Formation Continued

Reported occurrences elsewhere

Miocene? of Virgin Islands; Oligocene of Trinidad.

Upper Eocene and lower Oligocene 

of New Zealand.

Eocene of Saipan, Eniwetok, and 

mid-Pacific Mountains; Eocene, 

Guayabal Formation of Mexico; 

Eocene of California, Texas, Louisiana, Mississippi, and Georgia; 

Eocene in submarine core off 

northeastern United States.

Oligocene of Mississippi, Alabama, 

and Florida; upper Eocene of 

Cuba ; upper Oligocene and lower 

Miocene of Puerto Rico ; Miocene 

of Eniwetok.

Oligocene of Cuba, Trinidad, and 

Dominican Republic; Eocene of 

Trinidad; middle Eocene to lower 

Oligocene of Barbados; upper 

Oligocene and lower Miocene of 

Puerto Rico; Oligocene and Miocene of Venezuela; Miocene of 

Jamaica and Majorca.

Eocene of Cuba; Eocene of Mississippi ; Oligocene of Trinidad; Eocene in submarine core off northeastern United States; Eocene of 

Saipan.

Eocene of Cuba and Trinidad; Oligocene of Trinidad; middle and 

upper Eocene of Barbados.

Oligocene of Cuba and Trinidad; 

lower Oligocene of Barbados; Eocene of Trinidad, Ecuador, and 

Peru; Eocene in submarine core 

off northeastern United States; 

Miocene of California and Jamaica.

Lower Miocene of Trinidad; Miocene? of Virgin Islands; Eocene 

and Oligocene of Trinidad; middle Eocene to lower Oligocene of 

Barbados.

Upper Eocene of New Zealand; Eocene of Cuba.

Oligocene of Trinidad.

Pleurostomella cubensis 

Cushman and Bermudez.

Pleurostomella naranjoensis Cushman and Bermudez.

Stilostomella recta (Palmer and Bermudez).

Stilostomella subspinosa 

(Cushman).

Stomatorbina torrei

(Cushman and Bermudez).

Vaginulinopsis sublituus 

multicamerata (Cushman and Stainforth).

Virgulina colei Cushman__

Virgulina zetina Cole_____

Oligocene of Mexico.

Eocene, Guayabal Formation of 

Mexico; Eocene of California, 

Louisiana and Georgia; Oligocene of Alabama.

Table 2 gives the species of smaller Foraminifera of 

Oligocene age found in the Mahlac Member of the 

Alutom Formation on Guam. The few species noted 

in a preliminary study that was made of these same 

samples and incorporated into a report by Tracey and 

others (1964, p. A22) included a few names not given 

in the following table. These discrepancies have resulted from the shifting of a species from one genus 

to another (such as Cassidulina chipolensis to Cassigerinella), from the synonymizing of one species with 

another (such as Siphogenerina, seriata, a synonym of 

8. striata), from the correction of identification (such 

as Bolivina aff. B. tricosta for B. choctawensis), and
16 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

from the refinement of identification (such as Bolivinopsis cubens'is for B. sp.).

TABLE 2. Distribution of smaller Foraminifera in the Oligocene

of Guam

Species

Textulariidae: 

Vulvulina spinosa Cushman_ _ _

Bolivinopsis cubensis (Cushman and

Valvulinidae: 

Karreriella chilostoma (Reuss) _ _

sp

Miliolidae:

Pyrgo sp - _ .___

Lagenidae: 

Robulus cf . R. cleriici (Fornasini)

rotulus (Stache) -__ .___ _ ____

sp _- ____ .---_-__.__.___ _

Marginulina glabra d'Orbigny _ _______

Vaginulinopsis sublituus multicamerata 

(Cushman and Stainforth) ____ ____

Saracenaria sp_ ______ ________ _____

Dentalina cooperensis Cushman. ______

sp. B__________________________

sp. C_ . _____ _ _

sp. D____ _ _ _____ _____ _ ___

Enantiomorphina sp _ ____ ________

Nodosaria consobrina (d'Orbigny). _

aff. N. tosta Schwager _____ __ _

Chrysalogonium ciperense Cushman 

and Stainforth? _ ____ _ _ ______

lanceolum Cushman and Jar vis _ _ 

longicostatum Cushman and Jarvis. __ _ _ _______

tenuicostatum Cushman and Bermudez _ _ __ _ __ ___ ___

Sp_____ _-_____--_____-____-_

Rectoglandulina sp _ _________

Plectof rondiculariidae : 

Amphimorphina californica Cushman 

and McMasters _ __ _________ __

Buliminidae: 

Buliminella septata Keyzer?___ ___ _

Bulimina alazanensis Cushman. _ __ _

bleeckeri Hedberg. ___ ________

ovata d'Orbigny _ _ _ _ ______

Caucasina grata (Parker and Bermudez)_ __ _____ _ ___ ___

Fissurina fimbriata (Brady) _________

spp____- ________ ____________

Oolina squamosa catenulata (Williamson) _ ____ __ _ _ __

n. sp. aff. 0. gibbera (Buchner)

Bolivina beyrichi Reuss _ _ _ _

fastigia Cushman

gardnerae Cushman _ __

cf. B. minutissima Spandel

oligocaenica Spandel __

paula Cushman and Cahill

plicatella mera Cushman and Ponton _

rhomboidalis (Millett)

tortuosa Brady _ _ _ _ _

aff. B. tricosta Cushman and 

Bermudez__ _ _ ____

tumida Cushman _ __ _ _ _

Localities

Hi

6-1

X 

X

X

X 

X

X

X

X 

X

X 

X

X 

X

X

X

X

X

x

X 

X 

X 

X

X

X 

X 

X 

X 

X

X 

X 

X

X

X

Gj 13-1

X 

X

X

X

X

X

X

X

X

X

X 

X

X

X 

X

x

x

x

x

v

X

X

x

x

x

x

?

Gj 11-1

"x"

X

x

V

v

X

----

?

X

Gj 

14-1

X

X

X 

X

"x"

X 

X

X

----

TABLE 2.- -Distribution of smaller Foraminifera in the Oligocene 

of Guam Continued

Species

Buliminidae Continued 

Bolivina Continued 

vicksburgensis (Howe) _ ______

sp. B________-_______._________

Bolivina (Loxostomum) rostra (Gushman). _____________ ___ ___

Angulogerina byramensis (Cushman) __ 

cooperensis Cushman _________ _

Ql"fc

Orthomorphina parvula Todd, n. sp__-- 

Stilostomella aff. S. adelinensis (Palmer

nuttalli (Cushman and Jarvis)____

Ellipsoidinidae: 

Pleurostomella bierigi Palmer and

cubensis Cushman and Bermudez_ 

naranjoensis Cushman and BerQT\

Ellipsoglandulina labiata (Schwager) ___ 

Nodosarella aff. N. acus Cushman and

Discorbidae:

Discorbis balcombensis Chapman, Parr,

Rotaliidae: 

Asterigerinata bracteata (Cushman)

Eponides duprei ciervoensis Cushman

QT-V

Stomatorbina torrei (Cushman and

Pararotalia byramensis (Cushman) 

Cycloloculina cubensis Cushman and

Amphisteginidae : 

Asterigerina marshallana Todd and 

Post?___________ ___-________----_

Cymbaloporidae :

Elphidiidae :

Nonionidae:

"Nnninnella" m.inutissima Todd__

Localities

Hi 6-1

X

X

X

X

x 

x 

x 

x 

x 

x 

x 

x

X 

X 

X

v

X 

X 

X 

X 

X

X 

X

X 

X

x

X

X 

x

X 

X

X

x

X

x

X

X 

X

X

X 

X 

X

X

Gj 13-1

X

?

X

X

X

X 

X 

X

X 

X

x

X

X 

x

X

x

X

X 

x

X

X 

X

X 

X

Gj 11-1

----

X

?

X

X

X 

X

X

X

_--_

X

----

X 

X

Gj 14-1

X

X

X 

X 

X

X

X

X

X

X

X 

X

X

X

X 

X
SMALLER FORAMINIFERA FROM GUAM 17

TABLE 2. Distribution of smaller Foraminifera in the OUgocene 

of Guam Continued

Species

N onionidae C ontinued

Astrononion cf. A. australe Cushman

Cassidulinidae:

tricamerata Galloway and Heminway. ________________________

sp. Bsp. C 

Chilostomellidae : 

Chilostomella cyclostoma Rzehak__

Pullenia bulloides (d'Orbigny) _ _ _ _ ...

Anomalinidae:

havanensis Cushman and Berlobatulus (Walker and Jacob)

pseudoungerianus (Cushman). _

Cibicidina danvillensis (Howe and 

Wallace)? ------------------

Planorbulinidae : 

Planorbulinella larvata (Parker and

Heterohelicidae : 

Chiloguembelina cubensis (Palmer)

Globigerinidae:

conglomerata Schwager _ __

danvillensis Howe and Wallace _ _ 

dissimilis Cushman and Bermudez_ 

gortanii (Borsetti)

sellii (Borsetti) _ _ _

senilis Bandy _

suteri (Bolli) _ _

tripartita tapuriensis Blow and 

Banner _

yeguaensis Wienzierl and Applin _

Globigerinella danvillensis (Howe and 

Wallace)

Globigerinoides trilobus (Reuse)?

Cassigerinella chipolensis (Cushman 

and Ponton) _ _

Hantkeninidae : 

Hantkenina inflata Howe

Localities

Hi 6-1

X 

V

X

X

X

X 

X 

X

X 

X 

X

v

X 

X

X 

X 

X

X 

X 

X

X

X

v

X 

X 

X

01 13-1

X

X

X 

X

X

X 

X

X

X

X 

X

X

X

X 

X

X

xxxxx

v

X

Gj 11-1

X

----

X

X

X

X 

X

X

X

X

Gj 14-1

X

X 

X 

X

X

_ _ __

X

X

X

_---

----

Above the Mahlac Member of the Alutom Formation, a considerable thickness of Miocene beds intervenes between the Mahlac Member and the next higher 

formation in which smaller Foraminifera are found. 

Therefore, a radical difference in smaller Foraminifera 

is evident between the fauna of the lower Oligocene 

and that of the upper Miocene. In many of its aspects 

the Miocene is only subtly different from the Recent 

now found around Guam in a comparable environment.

The Eocene, although much less rich and less varied 

than the Oligocene, has a large proportion of its species 

(44 percent) in common with the overlying Oligocene. 

The Oligocene assemblage, on the other hand, although 

composed of nearly 150 species as compared with the 

92 species of the Miocene, has only 14 species (less than 

10 percent) in common with the Miocene. Moreover, 

probably more than 60 species (more than 40 percent 

of the Oligocene assemblage) became extinct between 

the lower Oligocene and the upper Miocene.

MIOCENE, TERTIARY / OR g

The Miocene Janum Formation, like the upper Eocene 

and Oligocene Alutom Formation, was formed in moderately deep water. Planktonic specimens are predominant and are accompanied by meager representatives 

of a varied benthonic assemblage.

A total of seven samples from vertical sections (four 

at Catalina Point, two at Lujuna Point, and one at 

Anao Point) represent the Miocene Janum Formation. 

Only one sample, Rr 15-1, has a rich fauna. Locations 

of these three vertical sections as well as of the other 

samples studied on Guam are shown in figure 1.

As is true for the other fossil assemblages, the interpretation of age is based primarily on a few planktonic species; however, several of the many benthonic 

species serve to support and confirm the age indicated 

by the planktonic species. Because the original determination of the Janum Formation was made (Cole, 

1963, p. E10; Tracey and others, 1964, p. A43) largely 

on the basis of field evidence a Tertiary / species of 

Lepidocyclina within a pebble interpreted as having 

been reworked and two species characteristic of the 

Barrigada Limestone of Tertiary g age that were found 

in place at the base of the Janum Formation the assignment of the Janum Formation to Tertiary g may 

be open to question. Correlation of the Janum Formation is discussed under incongruities of correlations 

(p. 121-123).

On Guam the following planktonic species are characteristic of and restricted to Miocene; the species marked 

by an asterisk are undoubtedly known in the Recent (see 

Todd, 1964) but were not found in the Recent Gflobigerhia ooze around Guam:

Globigei'inanepenthes Todd

*Globigerina conglomerata Schwager 

Globoquadrina altispira (Cushman and Jarvis)

*0rbulinabilobata (d'Orbigny) 

Orbulinu suturalis Bronnimann 

SphaeroidineUa disjuncta Finlay 

Sphaeroidinella kochi (Caudri) 

Sphaeroidinella seminulina (Schwager) 

Globorotalia menardii fijiensis Cushman 

Globorotalia menardii-tumida transition form
GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

144°40' 144°50' 13°40'

13°30r

13°20'

FIGURE 1. Localities of Eocene, Oligocene, and Miocene smaller Foraminifera studied from Guam.
SMALLER FORAMINIFERA FROM GUAM 19

Globorotalia tumida flexuosa (Koch) 

Globorotalia fohsi robusta Bolli

Among the planktonic species, only the ones mentioned below seem to be useful in limiting the age of the 

formation to a specific part of the Miocene.

Globigerina, nepenthes Todd was described from the 

Donni Sandstone Member of the Tagpochau Limestone 

of Saipan. Its vertical range in Venezuela and Japan 

is reported (Blow, 1959, p. 178; Takayanagi and Saito, 

1962, text fig. 2) to be limited to the Globorotalia 

mayeri/Globigerina nepenthes subzone and the Glol)orotalia menardii menardii/Globigerina nepenthes 

zone. These two zones encompass the upper part of the 

Vindobonian and the lower part of the Sarmatian. 

The occurrence of G. nepenthes in several deep-sea cores 

from North Atlantic sediment interpreted as Pliocene 

(Ericson and others 1963, text fig. 5) does not require 

the upward extension of range of this species, inasmuch 

as these authors mention (p. 733) the Miocene aspect of 

the Pliocene and state that "the survival of Miocene 

species into the Pliocene epoch implies that no abrupt 

or drastic temperature change occurred at the MiocenePliocene time boundary." A more reasonable explanation of the presence of Miocene species in the Pliocene 

might be that the sediments are, in reality, Miocene and 

that the Pliocene is less thick in the deep-sea Atlantic 

than has been thought.

Globoquadrina altispira (Cushman and Jarvis) was 

originally described from the Miocene of Jamaica and 

has been widely reported from the Miocene of many 

parts of the world in the equatorial belt. Its reported 

occurrences indicate that G. altispira may be expected 

in any part of the Miocene, although it possibly has 

greater or lesser restricted ranges in various areas. On 

Saipan it was found (Todd, 1957, table 3) in the Donni 

Sandstone Member of the Tagpochau Limestone, where 

it occurred in association with Globigerina nepenthes 

Todd. It also occurs, but without the association of 

Globigerina nepenthes, in the underlying Fina-sisu 

Formation (Todd, 1957, table 2), which was originally 

described as of late Oligocene age but here is regarded 

as of early Miocene age. In the Trinidad zonation it 

was reported (Bolli, 1957b, text fig. 18) to range within 

most of the Miocene, with the exception of the one lowest zone and the two highest zones. In Trinidad, Globoquadrina .altispira and Globigerma nepenthes are 

reported to have mutually exclusive ranges; G. nepenthes occurs in the two uppermost zones of the 

Miocene. Likewise in Venezuela, the ranges of Globoquadrina, altispira and Globigerina nepenthes are 

mutually exclusive. Globigerina nepenthes first appears at a higher horizon than the highest known occurrence of Globoquadrina altispira (Blow, 1959, p. 179, 

183).

In some short deep-sea cores from a guyot adjoining 

Eniwetok Atoll (Todd, 1964), Globoquadrina altispira 

occurs in the sections of the cores interpreted as late 

Miocene. Other recorded occurrences of G. altispira 

from the Miocene in the Pacific are from the Mid-Pacific 

Mountains (Hamilton, 1953), Sylvania Guyot off Bikini 

(Hamilton and Rex, 1959), and Yap Island in the 

Carolines (Cole and others, 1960).

Several estimates of the age ranges of these two species have been made. Blow (1959, chart 1) assigns the 

zones in which he reports Globoquadrina altispira to the 

Aquitanian and Burdigalian, and he assigns the zones 

in which he reports Globigerina nepenthes to the Vindobonian and Sarmatian. Stainforth (1960, range chart 

and p. 222) reports the range of Globoquadrina altispira 

to be from Stampian and Chattian to the Helvetian. 

Drooger (1956, text fig. 1) reports the range of Globoquadrina altispira to be from Aquitanian to Tortonian.

The genus Sphaeroidinella is well represented in the 

Janum Formation. The specimens belonging in this 

genus fall into four species that are connected, by transitional individuals, into a single complex. This Sphaeroidinell'a complex includes, at one extreme of morphological development, specimens having five or more 

chambers in the final whorl and a distinctly lobulated 

periphery S. kochi (Caudri). At the opposite extreme are specimens of S. dehiscens (Parker and Jones), 

the common Recent species that is nearly globular and 

unindented and that is composed of three chambers in 

the final whorl. The forms intermediate between 

these two extremes are identified as S. seminulina. 

(Schwager). They show three or four chambers in the 

final whorl and' have a slightly indented periphery. 

The fourth member of the Sphaeroidinella complex is 

S. disjuncta Finlay, which is distinguished by its 

coarsely reticulated wall surface. In number of chambers per final whorl and in the lobulation of its periphery, S. disjuncta includes both specimens that would be 

called S. kochi and others that would be called 8. 

seminulina.

Three of the previously discussed species of Sphaeroidinella,, that is, all but /S. dehiscens, are Miocene 

species. Moreover, /S. dehiscens, although characteristic of, and abundant in, many Recent deep water samples, 

has also been found in the Miocene (Todd, 1957, pi. 79, 

fig. 8). Thus the Sphaeroidinella complex supports a 

Miocene age for part of the Janum Formation.

Another highly variable complex in the Miocene may 

be called the Globorotalia menardii-tumida transition 

form. It includes rare individuals that, by themselves, 

could be regarded as typical of G. menardii (d'Orbigny)
110 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

and of G. tumida (Brady) ; however, most of the specimens fall somewhere between the two. The transition 

form has a rather broad and thick test that has heavy 

walls, a limbate keel, a slightly curved dorsal surface, 

and chambers slightly inflated ventrally. With these 

specimens are others nearly typical of the subspecies 

fijiensis, which is characterized by a slightly flatter and 

rounder test, more numerous chambers, and a tendency 

toward peripheral lobulation; the subspecies ungulata, 

which is characterized by a more nearly planoconvex 

test, a more inflated ventral surface, and an angled 

ventral face of the final chamber; and the subspecies 

flexuosa, which is characterized by a final chamber that 

is reduced in size and is bent under nearly 90° toward 

the ventral side.

In addition there appears to be a close and probably 

transitional relationship with specimens placed in 

Globorotalia fohsi robusta Bolli. Biologically, the two 

species Globorotalia menard'd (d'Orbigny) and Globorotalia fohsi robusta Bolli may have no connection, but 

morphologically, they seem closely related. G. fohsi 

robusta has the heavy limbate keel that is characteristic 

of the G. menardii-tumida complex. However, G. fohsi 

robusta is a flatter, more compact form having one or 

two more chambers per final whorl, and its aperture 

is a low slit rather than an arch, as in the G, menardiitumida transition form.

Globorotalia fohsi robusta Bolli, which is a zone 

marker in the upper part of the Burdigalian and just 

beneath the lowest part of the range of Globigerina 

nepenthes Todd, is represented by only a few specimens 

and is found only in sample Kr 15-1. Its occurrence 

together with G. nepenthes may serve to define the age 

of the Janum Formation as near the upper limit of 

the range of the older species Globorotalia fohsi 

robusta Bolli and near the lower limit of the range 

of the younger one Globigerina nepenthes Todd.

It is of interest that some 20 years ago, well before 

the recognition of the value of planktonic species as age 

indicators, Glaessner (1943, p. 68-69) published a "tentative list of selected species of smaller Foraminifera," 

under the heading "Miocene index Foraminifera." In 

the list of 44 species, all but 2 species of Sphaeroidinella 

are benthonic forms. Six species in Glaessner's list of 

44, namely the 2 species of 8phaeroidinella, Nodosaria 

skobina Schwager, Nodosaria equisetiformis Schwager, 

Pyrulina labiata (Schwager), and Osangularia suiter 

(Parker and Jones) ( = Pulvinulinella bengalensis in 

Glaessner's list), are identical with the species identified 

from the Miocene of the Janum Formation of Guam.

In addition, there is a high degree of generic similarity between Glaessner's list of "Miocene index Foraminifera" and the Miocene species from Guam. Disregarding the 6 species in Glaessner's list that are found 

in the Miocene of Guam, the 38 remaining species fall 

into 25 genera. Twelve of these genera are represented 

in the Miocene of Guam, and it is possible that some of 

the species will prove to be not only generically identical but specifically so. For example, Vulvulina nicobarensis (Schwager) is possibly identical with V. 

spinosa Cushman; Eggerellal subovalis (Schwager) is 

possibly identical with Eggerella brad.yi (or with 

Karreriella bradyil} ; Karreriella siphonella (Reuss) is 

possibly identical with K. l>radyi (Cushman) ; and 

Uvigerina hispida Schwager is possibly identical with 

Uvigerina prob<oscidea Schwager.

The benthonic assemblage of the Janum Formation 

can add no refinement to the age of the beds. Several 

species included in the following list, however, are 

known to occur elsewrhere in the Miocene but not in the 

Recent of comparable facies around Guam. The presence of these species in the Janum samples serves as 

supporting evidence of Miocene age. Additional species 

are present in the Miocene of Guam but not in the 

Recent around Guam. The apparent elimination (or 

local extinction) of some of these Miocene species is 

probably due to incomplete collection of specimens or 

erratic distribution of rare species. Moreover, the 

Janum Formation includes only 65 benthonic species, 

about a third as many as the 187 species that are found 

in the composite Recent assemblage from the outer 

slopes off Guam.

Significant benthonic Foraminifera in the Miocene samples of 

the Janum Formation

Species Reported occurrences elsewhere

Bolivina pusilla Schwager_. Miocene of Kar Nicobar ; Miocene of

Egypt. 

Bolivina silvestrina Cush- Pliocene and Pleistocene of Italy.

man. 

Bulimina aguafrescaensis

Todd and Kniker. 

Buliminella septata Keyzer.

Cassidulina carandelli

Colom. 

Cassidulina carapitana

Hedberg.

Cassidulina sagamiensis 

Asano and Nakamura.

Cassidulina sp. E of Todd, 

1957.

Cassidulina nov. sp. of Germeraad. 

Dentalina, tauricornis

(Schwager).

Nodosaria equisetiformis 

Schwager.

Eocene of Chile.

Miocene of Saipan; "Miopliocene"

of Buton (Malay archipelago). 

Miocene (Burdigalian) of Majorca.

Oligocene of Venezuela; upper Oligocene of Trinidad; middle Oligocene of Dominican Republic; 

Miocene of Aruba; Aquitanian of 

Colombia; Oligocene of Belgium 

and Germany.

Pliocene to Recent of Japan.

Miocene, Donni Sandstone Member

of Tagpochau Limestone of

Saipan. 

"Young-Neogene" of central Seran,

Indonesia. 

Pliocene of Fiji; Miocene of Kar

Nicobar; middle Miocene of

Japan. 

Pliocene of Fiji; Miocene of Kar

Nicobar.
SMALLER FORAMINIFERA FROM GUAM 111

Significant benthonic Foraminifera in the Miocene samples of 

the Janum Formation Continued

Species

Nodosaria insecta 

Schwager.

Nodosaria skobina

Schwager. 

Orthomorphina fijiensis

(Cushman). 

Orthomorphina perversa

(Schwager).

Osangularia culter (Parker 

and Jones).

Reported occurrences elsewhere

Miocene of Kar Nicobar and Java; 

late Miocene and early Pliocene 

of Borneo; Tertiary of Japan.

Miocene of Kar Nicobar.

Pliocene of Fiji.

Miocene of Kar Nicobar; Miocene of 

Jamaica; Oligocene of Cuba; 

Pliocene of Italy.

Miocene of Kar Nicobar; Eocene, 

Oligocene, and Miocene of Saipan; Eocene of Mexico and California ; middle Eocene to lower 

Oligocene of Barbados; Eocene 

and Miocene of Spain; Aquitanian of Algeria; Eocene of Bulgaria.

Miocene of Kar Nicobar; Miocene 

and Pliocene of Borneo ; Pliocene 

of Fiji; Miocene of Jamaica; 

Tertiary of Dominican Republic ; 

Eocene and Oligocene of Barbados ; Miocene of Spain, France, 

and Egypt; Pliocene of Italy and 

Greece.

Miocene of Kar Nicobar; Pliocene 

of Fiji; Miocene of Japan; Eocene of Saipan; Miocene of Jamaica and Dominican Republic; 

Miocene of Spain, France, and 

Algeria.

Miocene of Kar Nicobar; Pliocene 

of Fiji.

Miocene of Kar Nicobar; Miocene 

and Pliocene of Borneo and Java; 

Eocene and Miocene of Saipan; 

Eocene and Oligocene of Trinidad.

Miocene of Vienna Basin; Miocene 

of Sumatra; Eocene, Oligocene, 

and Miocene of West Indies; Eocene, Oligocene, and Miocene of 

Spain.

Oligocene, Alazan Formation of 

Mexico; upper Eocene of Venezuela ; Oligocene of Trinidad; 

upper Oligocene of Dominican 

Republic; middle Eocene to lower 

Oligocene of Barbados; Miocene 

of Spain; Pliocene of Japan ; Recent of Philippines.

The chief local differences between the Miocene and 

the Recent benthonic faunas are in the families Textulariidae (7 species in the Recent and 1 in the Miocene), 

Miliolidae (52 in the Recent and 2 in the Miocene), 

Spirillinidae and Discorbidae (15 in the Recent and 

not represented in the Miocene), and the families 

Rotaliidae, Pegidiidae, Amphisteginidae, Calcarinidae, 

and Cymbaloporidae (27 in the Recent and only 3 

rotaliids in the Miocene). Thus there is not much in 

common between the Miocene benthonic and the Recent 

benthonic faunas. If anything, I believe the kinds of 

benthonic species present in the Miocene, supported by 

the negative evidence of the kinds that are not present 

in the Miocene, indicate that the beds represented by 

the few Miocene samples studied were deposited at

Pleurostomelia alternans 

Schwager.

Pleurostomelia brevis 

Schwager.

Pyrulina labiata

(Schwager). 

Siphogenerina striata

(Schwager).

Stilostomella verneuili 

(d'Orbigny).

Vulvulina spinosa 

Cushman.

greater depths and farther from shore than the Recent 

outer slope samples that were taken from depths less 

than 200 fathoms.

Table 3 gives by localities the smaller Foraminifera 

of Miocene age found in the Janum Formation on 

Guam. Discrepancies are to be found between the 

species noted in my original examination of these same 

samples (Tracey and others, 1964, p. A43) and the 

species given in table 3. These discrepancies have resulted from (a) the shifting of a species from one genus 

to another (such as Eponides umbonatus to Oridorsalis 

and Siphonodosaria fijiensis to Orthomorphina) ; (b) 

the synonymizing of one species with another (such as 

Globigerina veneziwlana, a synonym of G. conglomerata, and Osangularia bengalensis, a synonym of 0. 

culter) ; (c) the correction of identification (such as 

Pulleniatina obliquiloculata for Globigerina inflata and 

Globorotalia hirsuta for G. canariensis) ; and (d) the 

refinement of identification (such as Gyroidina lamarckiana and G. soldanii for G. spp.). In addition, some 

of the indeterminate species and those whose generic 

placement was questioned in the original study have 

been eliminated from table 3.

TABLE 3. Distribution of smaller Foraminifera in the Miocene

of Guam

Species

Textulariidae:

Vulvulina spinosa Cushman___________

Valvulinidae:

Eggerella bradyi (Cushman)___________

Karreriella bradyi (Cushman)__________

Miliolidae:

Quinqueloculina lamarckiana d'Orbigny. 

Pyrgo murrhina (Schwager)___________

Lagenidae:

Robulus sp__________________________

Dentalina communis d'Orbigny. _______

tauricornis Schwager. ____________

sp. A_____-___-_--_______.______

Dentalinal spp._____-___-___-____--_

Nodosaria equisetiformis Schwager _

insecta Schwager.________________

skobina Schwager ________________

Lagena gracilis Williamson.___________

Poly m orphinidae:

Pyrulina labiata (Schwager) ____ _______

Buliminidae:

Buliminella septata Keyzer____________

Bulimina aguafrescaensis Todd and 

Kniker. __________-____-__-__--_--

Fissurina alveolata (Brady)__________

circulum Seguenza____-___-__-___

formosa (Schwager)______________

globosa Bornemann_______________

Bolivina aff. B. nitida Brady __________

pusilla Sehwager_________________

silvestrina Cushman______________

aff. B. sinuatum Galloway and 

Wissler_ ______________________

Localities

X

X

X

X

X

X

X

X

X

X

X
112 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

TABLE 3. Distribution of smaller Foraminifera in the Miocene 

of Guam Continued

Species

Buliminidae Continued

Reussella simplex (Cushman)__________

Uvigerina proboscidea Schwager________

proboscidea var. vadescens Gushman. ________________________

Siphogenerina striata (Schwager)-_-____

Orthomorphina fijiensis (Cushman) _____

parvula Todd, n. sp_ _____________

perversa (Schwager)______________

Stilostomella verneuili (d'Orbigny)______

Trifarina bradyi Cushman.___________

Ellipsoidinidae:

Pleurostometta alternans Schwager______

brevis Schwager._________________

Ellipsopleurostomella sp_______________

Rotaliidae:

Gyroidina lamarckiana (d'Orbigny)._

soldanii d'Orbigny_______________

Oridorsalis umbonatus (Reuss)_________

Osangularia culter (Parker and Jones) _ _ 

Elphidiidae:

Elphidium sp_-_---___-__-___-______

Nonionidae:

N onion pompilioides (Fichtel and Moll).. 

Nonionella sp______________________

Astrononion novozealandicum Cushman 

and Edwards____-__-_-_--_______

Cassidulinidae:

Cassidulina aflf. C. angulosa Cushman. _ _ 

carandelli Colom_________________

carapitana Hedberg______________

delicata Cushman._______________

minuta Cushman._______________

pacifica Cushman._______________

sagamiensis Asano and Nakamura. 

subglobosa Brady________________

subtumida Cushman._____________

nov. sp. of Germeraad (1946)_.____

sp. E of Todd (1957)___-__.______

Ehrenbergina albatrossi Cushman. _____

Chilostomellidae:

Pullenia bulloides (d'Orbigny)_________

sp_________________________ _

Sphaeroidina bulloides d'Orbigny_______

Anomalinidae:

Laticarinina pauperata (Parker and 

Jones) ____________________________

Planulina wuellerstorfi (Schwager)____

Cibicides cicatricosus (Schwager)_______

lobatulus (Walker and Jacob)______

cf. C. pseudoungerianus (Cushman) _ 

Globigerinidae:

Globigerina aflf. G. apertura Cushman. _ _ 

conglomerata Schwager____________

hexagona Natland________________

nepenthes Todd__________________

Globoquadrina altispira (Cushman and 

Jarvis) ___________________________

Globigerinoides conglobatus (Brady)____

sacculifer (Brady)______________

trilobus (Reuss)__________________

Globigerinella aequilateralis (Brady)_ __ 

Globigerinita glutinata (Egger)_________

Orbulina bilobata (d'Orbigny)__________

suturalis Bronnimann____________

universa d'Orbigny_______________

Pulleniatina obliquiloculata (Parker and 

Jones)____________________________

Localities

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

TABLE 3. Distribution of smaller Foraminifera in the Miocene 

of Guam Continued

Species

Globigerinidae Continued 

Sphaeroidinella dehiscens (Parker and 

Jones) ______ _____

kochi (Caudri). __ _ _____

VP'wiwiil'lYtfl .'Sf^lTWT'fl £TPf*^

Hastigerina pelagica (d'Orbigny) __ _

Globoro taliidae :

hirsuta (d'Orbigny) ______________

menardu-tumida transition form

Localities

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X 

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X

RECENT

Foraminifera were studied from 98 Recent samples. 

The samples have been grouped into the following 

categories :

Beaches:

(15 samples). 

Reefs:

Agana Reef (10 samples). 

Achang Reef (8 samples). 

Pago Reef (12 samples). 

Cocos Barrier Reef (3 samples). 

Cocos I/agoon:

East-West profile (12 samples). 

North-South profile (9 samples). 

Channels:

Mamaon Channel (NW. end of Cocos Lagoon, 7 

samples).

Manell Channel (into Achang Bay, 4 samples). 

Pago Channel (into Pago Bay, 8 samples). 

Outer slopes surrounding Guam :

(10 samples).

The seven deepest of the outer-slope samples (those 

from between 315 and 1,170 ft) provide the richest 

assemblages found in the Recent. These seven samples 

of globigerine ooze are similar to the samples of Miocene 

globigerine ooze from the Janum Formation, but they 

differ by having an admixture of shallower water material from upslope that is not found in the Miocene 

samples.

The major differences between the Miocene samples 

and the Recent outer-slope samples may be briefly summarized as follows: The Recent samples show (a) an 

increase in numbers and diversity of arenaceous species;
SMALLER FORAMINIFERA FROM GUAM 113

(b) great increase in abundance of specimens and diversity of species of Miliolidae and Ophthalmidiidae; (c) 

appearance in some abundance of camerinids and 

peneroplids that probably originated upslope; (d) disappearance of the family Ellipsoidinidae; (e) appearance of species in the families Spirillinidae and 

Discorbidae; (f) increase in numbers and diversity of 

species in the family Rotaliidae; (g) appearance in 

abundance of representatives of the families Amphisteginidae, Calcarinidae, and Cymbaloporidae, most of 

which also probably originated upslope; (h) decrease in 

numbers and diversity of species in the Cassidulinidae; 

and (i) appearance of species in the Planorbulinidae, 

Rupertiidae, and Homotremidae.

The other four main ecologic subdivisions of Recent 

samples beaches, reefs, lagoons, and channels 

together contain a composite fauna that differs only 

slightly in its four parts but is distinctly different from 

the fauna from the outer-slope samples.

The major differences between the deeper samples 

from the outer slope and the shallower ones from the 

beaches, reefs, lagoons, and channels may be briefly 

summarized as follows: The shallower samples show 

(a) an increase in abundance of the miliolids; (b) the 

complete disappearance of the families Lagenidae, Polymorphinidae, Cassidulinidae, Chilostomellidae, Rupertiidae, and Ceratobuliminidae; (c) the almost complete 

disappearance of the families Heterohelicidae, Spirillinidae, Robertinidae, Globigerinidae, and Globorotaliidae; (d) an increase in abundance of the camerinids, 

peneroplids, and elphidiids; (e) a decrease in numbers 

and diversity of species in the Buliminidae; (f) a nearly 

complete absence of all the deeper water species of 

Amphisteginidae, leaving only A. madagascariensis ; 

and (g) an increase in abundance and robustness of 

the three species: Amphixtegina. madagascariensis^ Calcarina spengleri, and Baculogypsina sphaerulata.

The Recent beach accumulations are typical of beaches 

in the tropical Pacific, being characterized by a predominance of reef-dwelling species Baculogypsina 

sphaerulata (Parker and Jones), C alcanna spengleri 

(Gmelin), and Marginopora vertebralis Blainville 

and by a scarcity of other species. The assemblages collected from the reefs, from the lagoons, and from the 

channels have little to distinguish them one from another. If anything, there is perhaps a greater diversity 

of species in the lagoons and channels than on the reefs 

and perhaps even a slightly greater diversity in the 

lagoons, where the circulation of water is less active than 

in the channels.

Table 4 gives by sample locality numbers the smaller 

Foraminifera of Recent age collected from Guam.

797-972 O 66

INCONGRUITIES OF CORRELATIONS IN THE WESTERN 

PACIFIC

During the past 10 years a rather detailed zonation 

based on planktonic Foraminifera has been built up 

within the Cretaceous and Tertiary. It originated 

mostly in the West Indian region but has been extended 

to Europe, Africa, and Asia and is now regarded by 

most of its users as having worldwide validity in the 

equatorial regions.

Because it was established on the basis of planktonic 

Foraminifera and without any reference to either larger 

Foraminifera or mollusks, there is no positive and indisputable way in which the zonation can be correlated 

with either the European time scale or with the Indonesian letter classification. Moreover, there is no universal agreement as to where the various zones are to 

be placed in terms of either of these other time scales. 

Nevertheless, some speculative correlations, as indicated 

in figure 2, may be made.

As a fundamental premise to the building up of correlations between beds that contain planktonic Foraminifera, we must accept the hypothesis of worldwide 

contemporaneous existence of these zones and their 

unchanging sequential relation to one another. Keeping in mind that these two assumptions contemporaneous worldwide existence and unchanging sequence are 

the keystone of our whole structure of correlation by 

planktonic faunas, we may proceed with tentative speculations about some of the correlations in the western 

Pacific.

The occurrence of Globigerina nepenthes in the Donni 

Sandstone Member of the Tagpochau Limestone on 

Saipan and in the Janum Formation on Guam raises 

the question of the correlation of these two occurrences 

and their placement in the worldwide planktonic zonation. Estimated age (Todd, 1957, p. 280) of the Donni 

Sandstone Member was limited upward by the presence 

of Orbulina suturalis and limited downward by the 

presence of Globorotalia menardii. In addition, the 

presence of Globigerma nepenthes, a species described 

from the Donni although already known in the West 

Indian section, served to restrict the age more narrowly 

through its limitation in the West Indian planktonic 

zonation. The resulting estimation of the age of the 

Donni Sandstone Member as earliest Miocene was made 

in terms of the Globorotalia, mayeri and G. menardii 

zones which were at that time regarded as lowermost 

Miocene.

Other authors have placed these two zones higher in 

the European time scale. The lack of agreement regarding their age is demonstrated by some of the current interpretations of these two zones. Drooger (1956,
114 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

TABLE 4. Distribution of Recent

Saccamminidae:

Hyperamminidae :

Textulariidae:

Verneuilinidae:

Valvullnidae:

Miliolidae:

pacifica Cushman __ _ ___________________________________________

spinata Cushman___- -----_-. _____ ___ ___ _ _ .--. ...

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SMALLER FORAMINIFERA FROM GUAM 115

Foraminifera around Guam

Reefs Continued

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XX -
116 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

TABLE 4. Distribution of Recent

Miliolidae Continued 

Trttoculina Continued

denticulata var. striolata (Brady)- _ ______ ._ . ... ..... ...

Ophthalmidiidae:

Trochamminidae :

Placopsilinidae:

Haddonia torresiensis Chapman. _ __ __________________________________

Lagenidae:

Polymorphinidae :

Camerinidae:

Peneroplidae:

arietina (Batsch) - _ - _ .. __ .. _ _ .... ...

Marginopora vertebralis Blainville.. __ . _ ... __ . ..... .. _ .

Alveolinellidae:

Heterohelicidae:

Buliminidae:

porrecta Brady _ .. .. --..- .. -------- .-.. . .

Rectobolivina bifrons var. striatula (Cushman).-. _ ____-_.. _ _ ______ 

Retissella pulchra Cushman . __ __ .. .. .

Chrysalidinella earlandi Cushman. .. _ ... . .... __ _ _.__ . ...

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SMALLER FORAMINIFERA FROM GUAM 117

Foraminifera around Guam Continued

Reefs Continued

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118 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

TABLE 4. Distribution of Recent

Buliminidae Continued

Spirlllinidae:

Discorbidae:

Rotalildae:

Pegidiidae:

Amphlsteginidae :

radiata (Fichtel and Moll). __

Calcarinldae: 

Calcarina spengleri (Gmelln) __ . ... _.

Cymbaloporidae :

Elphidiidae:

Cassidulinidae:

C hilostomellidae : 

Sphaeroidina bulloides d'Orbienv.

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SMALLER FORAMINIFERA FROM GUAM 119

Foraminifera around Guam Continued

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120 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

TABLE 4. Distribution of Recent

Nonionidae: 

Nonion boueanum (d'Orbigny) ___

japonicum Asano. . . . ____-.__ _ _ . .

Anomalinidae:

Anomalina"! maculosa Todd __ -

Cibicides cicatricosus (Schwager) .. ...

lobatu lus (Walker and Jacob) .. -.-_-.-.

mayori (Cushman) ...

pseudoungerianus (Cushman) _ __ . .....

Planorbulinidae:

Planorbulina acervalis Brady _ ..

Planorbulinella larvata (Parker and Jones)... _ _ __ ... __ .._____ _ 

Acervulina inha erens Schultze _ ..... ------ ...

sp. of Todd (1957).... - . . .................. ......

Rupertiidae:

Homotremidae: 

Homotrema rubrum (Lamarck)- .--_---_-__.----______________________._

Robertlnidae:

C eratobuliminid ae :

Globigerinidae:

Oloborotaliidae:

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text fig. 1) indicates that in European and North 

African sections the approximate boundary between the 

upper extent of Globorotalia mayeri and the lower extent of Globorotalia menardii would fall within the upper part of the Tortonian. Blow (1959, chart 1) shows 

in his studies in Venezuela that the two zones 

Globorotalia mayeri s. 1. and Globorotalia, menardii 

s. 1. occupy all of the Vindobonian ( = Helvetian and 

Tortonian) and the lower part of the Sarmatian. Stainforth (1960, range chart) shows that the upper extent 

of Globorotalia mayeri (which would be the top of the 

Globorotalia mayeri zone) coincides with the Helvetian - 

Tortonian boundary. Bolli (1959, table 1) shows the 

boundary between the Globorotalia mayeri and Globorotalia menardii zones in the West Indian section as 

approximately equivalent to the basal Helvetian. Saito 

(1963, table 16) indicates that on Honshu Island, Japan,

this boundary coincides with the boundary between the 

Helvetian and Tortonian. In Bandy's conception 

(1964, text fig. 6) of the Cenozoic planktonic Foraminiferal zonation, the uppermost extent of the range of 

Globigerina nepenthes (which would be the upper 

boundary of the Globorotalia menardii zone) coincides 

with the Sarmatian-Pontian boundary [but Pontian is 

a continental stage in the upper Miocene and therefore 

should not enter into correlation by planktonic Foraminif era], whereas the uppermost extent of the range 

of Globorotalia mayeri (which would be the upper 

boundary of the Globorotalia mayeri zone) coincides 

with the Tortonian-Sarmatian boundary.

Thus it can be seen that there is no universal agreement as to where planktonic Foraminifera zones are to 

be placed in terms of the European time scale. There 

is, however, universal acceptance of the contemporane-
SMALLER FORAMINIFERA FROM GUAM 121

Foraminifera around Guam Continued

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ous existence around the world of these zones and their 

unchanging relation to one another.

The presence of the same assemblage of planktonic 

Foraminifera (including such a narrowly restricted 

species as Globigerina nepenthes in 'both the Janum Formation on Guam and the Donni Sandstone Member of 

the Tagpochau Limestone on Saipan suggests that the 

original interpretation that the Donni is of Tertiary e 

age is subject to reconsideration. This assignment to 

Tertiary e was made on the basis of larger Foraminifera 

in the Tagpochau but not in the Donni, coupled with 

stratigraphic relations indicating that the Donni beds 

are intercalated with those Tagpochau beds in which the 

Tertiary e larger Foraminifera were found. An alternative interpretation, in which the Donni beds are overlying and not intercalated with the Tagpochau beds and 

thus might be of post-Tertiary e age, should be considered. Another possible explanation of the faunal 

similarity of the Donni Sandstone Member of Saipan 

and the Janum Formation of Guam is that although 

equivalent in facies they are not precisely so in age and 

that a recurrence of facies brought back the several 

planktonic species that appear to have a limited stratigraphic range. Both the Donni and the Janum contain 

Globiger'ma. nepenthes, a species restricted to one 

zone the Gl<oborotalia mennrdii zone and the upper 

part of the underlying zone the Globorotalia mayeri 

zone. The range of Globiger'ma nepenthes is no longer

interpreted as lower Miocene but instead is variously 

interpreted as approximately Tortonian or as crossing 

the Helvetian-Tortonian boundary.

The Indonesian letter classification (Tertiary a to /) 

was originally set up (Van der Vlerk and Umbgrove, 

1927) on the basis of the sequence of larger Foramini-
122

European 

time scale

Pleistocene

Pliocene /

0)

c

0)

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5

Sarmatian (.

o m Tortonian

c c 

> .§ Helvetian i

Burdigalian ^

Aquitanian ( 

J

GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

Planktonic Foraminifera

zones and subzones

(Blow, 1959)

Indonesian letter 

classification (Van 

der Vlerk and 

Umbgrove, 1927; 

Leupold and Van 

der Vlerk, 1931)

Globigerina bulloides 

Sphaeroidinella seminulina

Globorotalia menardii/Globigerina nepenthes

G/oborcta//a mayeri CGIobigerina nepenthes 

\ Globorotalia lenguaensis

Globorotalia fohsi robusta 

Globorotalia fohsi lobata 

Globorotalia {ohsi fohsi 

Globorotalia fohsi barisanensis

Globigerinatella insuefa - 

Catapsydrax stainforthi 

Catapsydrax dissimilis

fGlobigerinoides bispherica 

\ Globigerinoides triloba

Tertiary h

Tertiary g

Tertiary f

Tertiary e

FIGURE 2. Speculative correlations between planktonic Foraminifera zones, the European time scale, and the Indonesian letter classification.

f era in the Eocene, Oligocene, and Miocene in Indonesia. 

An upward extension of the classification (Tertiary g 

and h) added later (Leupold and Van der Vlerk, 1931) 

was based mostly on lignitic and estuarine f acies. No 

reference to planktonic Foraminifera was made in either 

lower or upper part of the classification. Correlation 

between the letter classification and the European time 

scale is generally not attempted, particularly in its later 

parts, Tertiary e, /, g, and h. Van der Vlerk's statement (1955, p. 75), made nearly 30 years after the establishment of the Indonesian letter classification, that 

"correlation between Tertiary e and / and the Chattian-Aquitanian-Burdigalian (or Vindobonian) is at 

present quite impossible" is still applicable today.

Glaessner (1959, chart 1), however, has indicated a 

correlation for the Indo-Pacific region and Australia in 

which Tertiary e is shown as equivalent to the upper 

part of the Oligocene and the Aquitanian; Tertiary / 

equivalent to the Burdigalian, Helvetian, and Tortonian; Tertiary g equivalent to the Sarmatian and the 

lower part of the Pliocene; and Tertiary h equivalent 

to the upper part of the Pliocene. In Glaessner's correlation table, the Donni Sandstone Member of the 

Tagpochau Limestone is shown as belonging in the upper part of Tertiary / and also as equivalent to the 

Tortonian. In terms of the currently accepted approximate age of the planktonic species that are present in 

the Donni, this correlation with the Tortonian (and 

concurrently with Tertiary /) is a more reasonable one 

than that of early Miocene age (and Tertiary e) that

was attributed to the Donni by me in 1957 (Todd, 1957, 

p. 280).

The correlation of the Janum with Tertiary g was 

originally made upon the basis of the evidence of the 

larger Foraminifera is discussed on page 17. The abundant population of planktonic Foraminifera found in 

the Janum is also inherently capable of providing a 

close age determination for the Janum, although not 

directly in terms of the Indonesian letter classification. 

The planktonic population of the Janum indicates its 

probable placement in one of the zones containing 

Globigerina nepenthes.

In terms of Saito's (1962) interpretation of the range 

of Globigerina nepenthes, the Janum would fall somewhere within the upper Helvetian or lower Tortonian. 

In terms of Blow's (1959) interpretation, it would fall 

within the "Vindobonian-Sarmatian?." In terms of 

Bandy's (1964) interpretation, it would fall between 

the middle Burdigalian and the top of the Sarmatian. 

In terms of Glaessner's (1959) correlation chart, the 

Donni Sandstone Member of the Tagpochau Limestone 

(called Donni Tuff on the chart) is equivalent to the 

Tortonian and also to the upper part of Tertiary /. 

Thus by a two-stage correlation (starting with the assumption that the Janum is approximately equivalent 

to the Donni and then that the Donni is equivalent to 

the Tortonian and to the upper part of Tertiary /) a 

possible interpretation as Tertiary / may be arrived 

at for the Janum.
SMALLER FORAMINIFERA FROM GUAM 123

All these possible interpretations of age of the Janum, 

however, have to be qualified by the tacit understanding that there is nothing in the Janum that, per se. 

indicates its direct correlation with Tertiary /, with 

the Tortonian, or with any other stage of the European 

time scale. However, Drooger's (1964) well-taken 

point that "the labelling with stage names of deposits 

all over the world * * * forms a heavy burden to 

progress in stratigraphic correlations," should not inhibit the attempt to correlate between deposits in distant parts of the world, particularly if it can be done 

on the basis of planktonic Foraminifera.

Another attempt at correlation by means of planktonic Foraminifera in the western Pacific was discussed 

by Cole and others (1960). On the island of Yap, 

planktonic Foraminifera of the Globigerinatella insueta 

zone were found in association with larger Foraminifera. The planktonic Foraminifera were correlatable 

with those of the Fina-sisu Formation of Saipan, which 

in turn had originally been regarded as Tertiary d in age 

but without corroboration. The larger Foraminifera 

were indicative of Tertiary / age and correlatable (Cole, 

1963, table 3) with the Bonya Limestone of Guam, 

which is Tertiary / in age, and with beds on Fiji dated 

as Tertiary /. After discussing possible explanations 

of this dilemma, such as reworking and local expansion 

of zones, the question was left unresolved.

In view of present-day understanding of correlation 

by planktonic Foraminifera, new light may be shed on 

this question. The Yap occurrence falls in the Globigerinatella insueta/Globigerinoides bispherica subzone. 

This zone is correlated with the uppermost Aquitanian 

by several authors (Blow, 1959, chart 1; Bolli, 1959, 

table 1; Stainf orth, 1960, range chart; Saito, 1963, table 

16; Hanzawa, 1964, p. 298; Bandy, 1964, text fig. 5), but 

Drooger correlated this zone with the upper part of the 

Helvetian (1956, text fig. 1). Only if the youngest estimate of age is used for the Globigerinatella insueta 

zone namely, the upper part of the Helvetian would 

the insueta assemblage be contemporaneous with an 

assemblage of larger Foraminifera of Tertiary / age. 

By placing the Donni in Tertiary / instead of Tertiary 

e (as now seems more logical) the dilemma can be resolved. For then both the insueta/bispherica subzone 

and the nepenthes zone would fall into Tertiary /, the 

former at the base and the latter at the top. But without 

both these assumptions (that is, the Donni being Tertiary / and the insueta/bispherica subzone being Tertiary /), I cannot explain the Yap occurrence of 

insueta/bispherica planktonics in association with Tertiary / larger Foraminifera. Even though both assemblages might be placed in Tertiary /, I cannot conceive 

of the insueta assemblage, characteristic of the Finasisu, being contemporaneous with the nepenthes assemblage that is characteristic of the Donni.

FAUNAL REFERENCE LISTS

Two alphabetized lists one for the benthonic species 

and one for the planktonic are included to facilitate 

reference to the original source or to a systematic 

treatise.

For each species that is illustrated a reference to the 

plates is included. The figures are grouped into four 

divisions, corresponding to the four ages that are studied, and the figures are arranged systematically on the 

plates within each of these divisions. Following the 

reference, one or more letters are added to indicate the 

age or ages in which the species was found: E, Eocene, 

O, Oligocene, M, Miocene, and K, Recent. The samples 

in which each species was found may be determined 

by referring to table 1 for the Eocene, table 2 for the 

Oligocene, table 3 for the Miocene, and table 4 for the 

Recent. The localities from which the samples were 

collected are shown in figure 1 and are given following

the fauna.

BENTHONIC SPECIES

Plate and figure numbers in parentheses in list below 

refer to those illustrated in this report.

Acervulina inhaerens 'Schultze. Oushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 372, pi. 91, figs.

37, 38. R. 

Acervulina sp. Todd, 1957, U.S. Geol. Survey Prof. Paper 280-H,

p. 292 (table 4), pi. 92, fig. 1'5. R. 

Alabamina conica Todd, 1957, U.S. Geol. Survey Prof. Paper

280-H, p. 295, pi. 69, fig. 11. EO. (PI. 6, fig. 3.) 

Alliatina translucens (Cushman). Nonionella translucent

Cushman, 1933, U.S. Natl. Mus. Bull. 161, pt. 2, p. 45, pi. 11,

fig. 2. R. 

Ammomassilina alveoliniformis (Millett). Massilina alveoliniformis Millett, 1898, Royal Micros. Soc. Jour., p. 609, pi.

13, figs. 5-7. R. 

Amphimorphina californioa Oushman and McMasters, 1936,

Jour. Paleontology, v. 10, p. 513, pi. 75, figs. 21-25. O. 

Amphistegina Mkiniensis Todd and Post, 1954, U.S. Geol. Survey Prof. Paper 260-N, p. 563, pi. 201, fig. 4. E. 

Amphistegina lessonii d'Orbigny. Todd, 1965, U.S. Natl. Mus.

Bull. 161, pt. 4, p. 33, pi. 11, fig. 4. R. 

Amphistegina madagascariensis d'Orbigny. Todd, 1965, U.S.

Natl. Mus. Bull. 161, pt. 4, p. 34, pi. 11, fig. 3; pi. 12,

figs. 1, 2. R. 

Amphistegina radiata (Fichtel and Moll). Todd, 1965, U.S.

Natl. Mus. Bull. 161, pt. 4, p. 34, pi. 13, figs. 1-3; pi. 14,

figs. 1-3. R. 

Amphistegina radiata var. papillosa Said. Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 362, pi. 90, figs. 5, 6. R. 

Amphistegina radiata (Fichtel and Moll) var. of Cushman,

Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper

260-H, p. 363, pi. 90, fig. 4. R.
124 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

Amphistegina radiata (Fichtel and Moll) var. Amphistegina 

lessonii [part] Brady, 1884, Challenger Kept., Zoology, 

v. 9, p. 740, pi. Ill, fig. 1. R.

Angulogerina albatrossi Cushman, 1932, Cushman Lab. Foram. 

Research Contr., v. 8, p. 45, pi. 6, figs. 11. 12. R.

Angulogerina byramensis (Cushman). Cushman and McGlamery, 1942, U.S. Geol. Survey Prof. Paper 197-B, 

p. 72, pi. 6, figs. 4-10. O. (PI. 5, fig. 15.)

Angulogerina cooperensis Cushman, 1935, U.S. Geol. Survey 

Prof. Paper 181, p. 42, pi. 16, fig. 9. O. (PL '5, fig. 16.)

Angulogerina vicksburgensis Cushman, 1935, Cushman Lab. 

Foram. Research Contr., v. 11, p. 33, pi. 5, figs. 3, 4. O. 

(PI. 5, fig. 17.)

Angulogerina sp. O.

A short, stout form having costae on the initial end.

Anomalina coronata Parker and Jones. Brady, 1884, Challenger Rept., Zoology, v. 9, p. 675, pi. 97, figs. 1, 2. R. 

(PI. 19, fig. 8.)

Anomalina glabrata Cushman. Graham and Militante, 1959, 

Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 115, pi. 19, 

fig. 8. R.

Anomalina granosa (Hantken). Vassilenko, 1954, Neft. geol. 

inst., Leningrad, Trudy, n. ser., no. 80, p. 70, pi. 6, figs. 

2-4. O. (PI. 6, fig. 6; pi. 7, fig. 3.)

Anomalinat maculosa Todd, 1957, U.S. Geol. 'Survey Prof. Paper 

280-H, p. 296, pi. 92, fig. 12. R.

Articulina pacifica Cushman, 1944, Cushman Lab. Foram. Research, Spec. Pub. 10, p. 17, pi. 4, figs. 14-18. R.

Articulina sp. R. (PI. 17, fig. 10.)

Only two specimens of this distinctive species were 

found in Recent sample 663 from 972 fathoms off the 

northeastern coast of Guam. The species appears to be 

undescribed but cannot be erected on so few specimens. 

The test is rather compressed for the genus. The 

costae are high, sharp, and closely spaced and slightly 

oblique to the axis of the chamber, thus curved around 

at the base of the chamber. The periphery is marked by 

one of the costae being about twice as high as the others, 

and in the specimen that is not illustrated this costa 

is serrate because it is broken. The aperture is surrounded by a thickened lip. The illustrated specimen has 

a second flaring lip below the main one, a freak development that gives the specimen the appearance of a double 

aperture.

Astacolus bradyi (Cushman). Cushman, Todd, and Post, 1954, 

U.S. Geol. Survey Prof. Paper 260-H, p. 343, pi. 86, fig. 9. 

R. (PI. 18, fig. 7.)

Astacolus aff. A. califomicus Galloway and Wissler, 1927, Jour. 

Paleontology, v. 1, p. 46, pi. 8, fig. 4. R.

Astacolus planulatns Galloway and Wissler. Cushman, Todd, 

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, 

p. 343, pi. 86, fig. 7. R. (PI. 18, fig. 5.)

Asterigerina marshallana Todd and Post, 1954, U.S. Geol. Survey Prof. Paper 260-N, p. 562, pi. 201, fig. 3. EO?

Asterigerinata bracteata (Cushman). Todd and Low, 1960, U.S. 

Geol. Survey Prof. Paper 260-X, p. 843, pi. 260, fig. 8. O.

Astrononion cf. A. australe Cushman and Edwards, 1937, Cushman Lab. Foram. Research Contr., v. 13, p. 33, pi. 3, 

figs. 13, 14. O. (PI. 6, fig. 4.)

Astrononion novozealmidicum Cushman and Edwards, 1937, 

Cushman Lab. Foram. Research Contr., v. 13, p. 35, pi. 3, 

fig. 18. M. (PI. 12, fig. 13.)

Astrononion cf. A. pusillum Hornibrook, 1961, New Zealand

Geol. Survey Paleont. Bull. 34 (1), p. 96, pi. 12, figs. 229,

236. O. (PI. 6, fig. 2.) 

Baculogypsina sphaerulata (Parker and Jones). Todd, 1960,

Tohoku Univ. Sci. Repts., 2d ser. (Geology), spec. v. 4,

p. 101, pi. 10, figs. 2, 5-7. R. 

Baggina parva Todd, 1957, U.S. Geol. Survey Prof. Paper 280-H,

p. 297, pi. 83, fig. 8. O.

Baggina totomiensis Makiyama. Asano, 1951, Illustrated catalogue of Japanese Tertiary smaller Foraminif era. Pt. 14 :

Rotaliidae, p. 21, figs. 154, 155. R. (PI. 19, fig. 4.) 

Bdelloidina aggregata Carter. Todd and Low, 1960, U.S. Geol.

Survey Prof. Paper 260-X, p. 827, pi. 263, fig. 8. R. 

Biloculinella globula (Bornemann). Boltovskoy, 1959, Argentina Servicio Hidrografia Naval Pub. H1005, p. 57, pi. 6,

fig. 11. R. (PI. 17, fig. 11.) 

Bolivina beyrichi Reuss. Cushman, 1937, Cushman Lab. Foram.

Research Spec. Pub. 9, p. 74, pi. 9, figs. 3-6. O. (PI. 5,

fig. 6.) 

Bolivina choctawen-sis Cushman and McGlamery? Cushman,

1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 72,

pi. 8, fig. 24. E. 

Bolivina compaota Sidebottom. Cushman, 1937, Cushman Lab.

Foram. Research Spec. Pub. 9, p. 135, pi. 17, figs. 22-24.

R. 

Bolivina fastigia Cushman, 1937, Cushman Lab. Foram. Research

Spec. Pub. 9, p. 76, pi. 9, figs. 12-14. O. (PI. 5, fig. 13.) 

Bolivina gardnerae Cushman. Cushman, 1937, Cushman Lab.

Foram. Research Spec. Pub. 9, p. 60, pi. 7, figs. 25, 26. O. 

Bolivina hantkeniana Brady. Cushman, 1937, Cushman Lab.

Foram. Research Spec. Pu'b. 9, p. 127, pi. 16, figs. 18-20

R. (PL 18, fig. 8.) 

Bolivina cf. B. minutissima Spandel. Cushman, 1937, Cushman

Lab. Foram. Research Spec. Pub. 9, p. 73, pi. 8, fig. 28.

O. (PL 5, fig. 9.) 

Bolivina aff. B. nitida Brady. Cushman, 1937, Cushman Lab.

Foram. Research Spec. Pub. 9, p. 136, pi. 17, fig. 25. M. 

Bolivina oligocaenica Spandel. Cushman, 1937, Cushman Lat).

Foram. Research Spec. Pub. 9, p. 74, pi. 9, figs. 1, 2. O.

(PL 5, fig. 7.)

Bolivina paula Cushman and Cahill. Cushman, 1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 91, pi. 11.

fig. 9. O. 

Bolivina plicatella mera Cushman and Ponton. Cushman,

1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 90,

pi. 11, figs. 5-8. O. (PL 5, fig. 8.) 

Bolivina pseudopygmaea Cushman. Cushman, 1942, U.S. Natl.

Mus. Bull. 161, pt. 3, p. 29, pi. 8, fig. 6. R. 

Bolivina pusilla Schwager. Cushman, 1937, Cushman Lab.

Foram. Research Spec. Pub. 9, p. 114, pi. 14, figs. 8, 9. M. 

Bolivina rhomboidalis (Millett). Cushman, 1937, Cushman

Lab. Foram. Research Spec. Pub. 9, p. 138, pi. 18, fig. 7.

OR. (PL 5, fig. 10.) 

Bolivina robusta Brady. Cushman, 1937, Cushman Lab. Foram.

Research Spec. Pub. 9, p. 131, pi. 17, figs. 1-4. R. 

Bolivina silvestrina Cushman, 1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 109, pi. 13, figs. 14-16. M. (PL

12, fig. 11.) 

Bolivina aff. B. sinuata Galloway and Wissler. Cushman, 1937,

Cushman Lab. Foram. Research Spec. Pub. 9, p. 120, pi.

14, figs. 19, 20. M. (PL 12, fig. 12.) 

Bolivina spinesoens Cushman. Cushman, 1937, Cushman Lab.

Foram. Research Spec. Put). 9, p. 142, pi. 18, figs.

17-19. R.
SMALLER FORAMINIFERA FROM GUAM 125

Bolivina striatula Cushman. Cushman, 1937, Cushman Lab. 

Foram. Research Spec. Pub. 9, p. 154, pi. 18, figs. 30, 

31. R.

Bolivina tortuosa Brady. Cushman, 1937, Cushman Lab. 

Foram. Research Spec. Pub. 9, p. 133, pi. 17, figs. 11-19. 

O R.

Bolivina aff. -B. tricosta Cushman and Bermudez. Cushman, 

1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 57, 

pi. 7, fig. 11. O. (PL 5, fig. 12.)

Bolivina tumida Cushman. Cushman, 1937, Cushman Lab. 

Foram. Research Spec. Pub. 9, p. 99, pi. 10. fig. 21. O.

Bolivina vioksburgensis (Howe). [Not Bolivina vicksburgensis Cushman, 1922, which is now Bifarina.] Pleurostomella vicksburgensis Howe, 1930. Jour. Paleontology, 

V. 4, p. 331, pi. 27, fig. '5. O. (PI. 5, fig. 14.)

Bolivina zanzibarica Cushman, 1937, Cushman Lab. Foram. R£- 

search Spec. Pub. 9, p. 151, pi. 22, figs. 25, 26. R.

BoUvina sp. A. O.

Straight, oblique, and flush sutures; smooth wall.

Bolivina sp. B. O. (PL 5, fig. 19.)

Straight, oblique, and depressed sutures; rugose wall.

Bolivina (Loxostomum) limbata Brady, 1884, Challenger Rept., 

Zoology, v. 9, p. 419, pi. 52, figs. 26-28. R.

Bolivina (Loxostomum) limbata var. costulata Custiman. Loxostoma limbatum (H. B. Brady) var. costulatum (Cushman). Cushman, 1937, Cushman Lab. Foram. Research 

Spec. Pub. 9, p. 187, pi. 21, figs. 30, 31. R.

Bolivina (Loxostomum) mayori Cushman. Loxostoma mayori 

(Cushman). Cushman, 1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 195, pi. 22, figs. 16-21. R.

Bolivina (Loxostomum) porrecta Brady. Loxostoma porrectum 

(H. B. Brady). Cushman, 1937, Cushman Lab. Foram. 

Research Spec. Pub. 9, p. 190, pi. 22, figs. 7-10. R.

Bolivina (Loxostomum) rostra (Cushman). Loxostoma rostrum Cushman. Cushman, 1937, Cushman Lab. Foram. 

Research Spec. Pub. 9, p. 195, pi. 22, fig. 34. O. (PL 5, 

fig. 11.)

Bolivinella folium (Parker and Jones). Cushman, 1942, U.S. 

Natl. Mus. Bull. 161, pt. 3, p. 3, pi. 2, figs. 1-4, 6. R.

Bolivinopsis cubensis (Cushman and Bermudez). Spiroplectoides cubensis Cushman and Bermudez, 1937, Cushman Lab. Foram. Research Contr., v. 13, p. 13, pi. 1, 

figs. 44, 45. O. (PL 4, fig. 1.)

Borelis pulchrus (d'Orbigny). Cushman, 1930, U.S. Natl. Mus. 

Bull. 104, pt. 7, p. 55, pi. 15, figs. 9,10. R.

Bronnimannia haliotis (Heron-Alien and Earland). Todd, 1965, 

U.S. Natl. Mus. Bull. 161, pt. 4, p. 27, pi. 5, fig. 2. R. 

(PI. 19, fig. 3.)

Bulimina aguafrescaensis Todd and Kniker, 1952, Cushman 

Found. Foram. Research, Spec. Pub. 1, p. 22, pi. 4, fig. 5. 

M.

Bulimina alasanensis Cushman. Cushman and Parker, 1947, 

U.S. Geol. Survey Prof. Paper 210-D, p. 103, pi. 24, figs. 

14-16. O. (PL 5, fig. 3.)

Bulimina bleeckeri Hedberg, 1937, Jour. Paleontology, v. 11, 

p. 675, pi. 91, figs. 12, 13. O. (PL 5, figs. 1, 2.)

Bulimina costata d'Orbigny. Cushman and Parker, 1947, U.S. 

Geol. Survey Prof. Paper 210-D, p. 115, pi. 27, figs. 2, 3. 

R.

Bulimina orata d'Orbigny. Cushman and Parker, 1947, U.S. 

Geol. Survey Prof. Paper 210-D, p. 106, pi. 25, figs. 8, 

9. O.

Bulimina semicostata Nuttall. Cushman and Parker, 1947, U.S.

Geol. Survey Prof. Paper 210-D, p. 93, pi. 21, figs. 28, 29.

EO. (PL 1, fig. 1; pi. 5, fig. 4.) 

Bulimina tuxpamensis Cole. Cushman and Parker, 1947, U.S.

Geol. Survey Prof. Paper 210-D, p. 101, pi. 24, fig. 6. E. 

Bulimina sp. O.

Triangular, small (0.2 mm). 

Buliminella milletti Cushman. Cushman, 1942, U.S. Natl. Mus.

Bull. 161, pt. 3, p. 7, pi. 3, figs. 1-4. R. 

Buliminella septata Keyzer. Todd, 1957, U.S. Geol. Survey

Prof. Paper 280-H, p. 298, pi. 73, fig. 3; pi. 75, figs. 27-29.

MO. 

Buliminoides williamsoniana (Brady). Bulimina williamsoniana Brady, 1884, Challenger Rept., Zoology, v. 9, p. 408,

pi. 51, figs. 16, 17. R. 

Calcarina spengleri (Gmelin). Todd, 1960, Tohoku Univ. Sci.

Repts., 2d ser. (Geology), spec. v. 4, p. 101, pi. 10, figs. 1,

3-5. R.

Cancris sagra (d'Orbigny). Cushman and Todd, 1942, Cushman Lab. Foram. Research Contr., v. 18, p. 77, pi. 19,

figs. 3-7. R. (PL 19, fig. 2.)

Carpenteria hamiltonensis Glaessner and Wade?, 1959, Micropaleontology, v. 5, p. 200, pi. 1, figs. 9-11; pi. 3, figs. 1,

2. E. 

Carpenteria proteiformis Goes. Brady, 1884, Challenger Rept.,

Zoology, v. 9, p. 679, pi. 97, figs. 8-14. R. 

Carterina spiculotesta (Carter). Loeblich and Tappan, 1955,

Smithsonian Misc. Colln., v. 128, no. 5, p. 37, pi. 4, figs.

9, 10. R. 

Cassidulina aff. C. angulosa Cushman. Todd, 1965, U.S. Natl.

Mus. Bull. 161, pt. 4, p. 40, pi. 17, fig. 2. M. (PL 13,

fig. 2.) 

Cassidulina carandelli Colom, 1943, Real Soc. espanola hist.

nat. BoL, v. 41, p. 324, pi. 23, figs. 65-67. M. (PL 13,

fig. 4.) 

Cassidulina carapitana Hedberg, 1937, Jour. Paleontology, v. 11,

p. 680, pi. 92, fig. 6. M. 

Cassidulina delicata Cushman. Todd, 1965, U.S. Natl. Mus.

Bull. 161, pt. 4, p. 42, pi. 17, figs. 6, 7. MR. (PL 18,

fig. 10.) 

Cassidulina minuta Cushman. Todd, 1965, U.S. Natl. Mus. Bull.

161, pt. 4, p. 43, pi. 17, fig. 3. MR. (PL 18, fig. 9.) 

Cassidulina pacifica Cushman, 1925, Cushman Lab. Foram. Research Contr., v. 1, pt. 3, p. 53, pi. 9, figs. 14-16. M. (PL

13, fig. 6.) 

Cassidulina sagamiensis Asano and Nakamura, 1937, Japanese

Jour. Geology and Geography, v. 14, nos. 2, 3, p. 147, pi. 14,

fig. 5. M. (PL 13, fig. 1.) 

Caszidulina subglobosa Brady. Todd, 1965, U.S. Natl. Mus. Bull.

161, pt. 4, p. 45, pi. 16, fig. 7. OMR. (PL 13, fig. 3.) 

Cassidulina subtumida Cushman. Todd, 1965, U.S. Natl. Mus.

Bull. 161, pt. 4, p. 45, pi. 16, figs. 5, 6; pi. 17, fig. 1. M. 

Cassidulina tricamerata Galloway and Heminway, 1941, New

York Acad. Sci., Sci. Survey of Porto Rico and Virgin

Islands, v. 3, pt. 4, p. 425, pi. 32, fig. 3. O. (PL 7, fig. 1.) 

Cassidulina nov. sp. of Germeraad, 1946, in Rutten and Hotz,

Geol. Petrol, and Paleont. Results of Explorations in the

island of Ceram, ser. 3, Geol., no. 2, p. 72, pi. 4, figs. 11,

12. M. 

Cassidulina sp. E of Todd, 1957, U.S. Geol. Survey Prof. Paper

280-H, p. 298, pi. 77, fig. 9. M. 

Cassidulina sp. A. O. 

Globular.
126 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

Cassidulina sp. B. O.

Flattened, four-chambered. 

Cassidulina sp. C. O.

Angled. 

Cassidulina'! sp. D. [Possibly related to the lower Miocene

genus Pseudocassidulinoides (de Klasz and Rerat, 1963,

p. 78).] O.

Elongate globular with proportionally large aperture. 

Caucasina grata (Parker and Bermudez). Buliminella grata

Parker and Bermudez, 1937, Jour. Paleontology, v. 11,

p. 515, pi. 59, fig. 6. O. (PI. 4, fig. 9.) 

Chilostomella cyclostoma Rzehak, 1888, Annalen K. K. Naturh.

Hofmuseums, Wien, v. 3, p. 258, pi. 11, fig. 1. O. (PI. 6,

fig. 10.) 

Chrysalidinella earlandi Oushman. 1945, Cushman Lab. Foram.

Research Contr., v. 21, p. 53, pi. 8, fig. 23. R. 

Chrysalogonium ciperense Cushman and Stainforth?, 1945, Cushman Lab. Foram. Research Spec. Pub. 14, p. 26, pi. 3,

fig. 31. O.

Chrysaloffonium lanceolum Cushman and Jarvis, 1934, Cushman Lab. Foram. Research Contr., v. 10, p. 75, pi. 10,

fig. 16. O. (PL 4, fig. 7.)

Chrysalogonium longicostatum Cushman and Jarvis, 1934, Cushman Lab. Foram. Research Contr., v. 10, p. 74, pi. 10,

fig. 12. EO. 

Chrysalogonium tenuicostatum Cushman and Bermudez, 1936,

Cushman Lab. Foram. Research Contr., v. 12, p. 27, pi. 5,

figs. 3-5. O. 

Chrysalogonium sp. O. 

Smooth walled. 

Cibicidella variaMlis (d'Orbigny). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 372, pi. 82,

fig. 13. R. 

Cibicides brevoralis Carter, 1958, Victoria Geol. Survey Bull. 55,

p. 47, pi. 6, figs. 54-56. O. 

Cibicides carinatus (Terquem). LeCalvez, 1949, Revision des

Foraminiferes Lutetiens du Bassin de Paris, II. Rotaliidae et Families Affines, p. 45, pi. 4, figs. 72-74. O.

(PI. 7, fig. 4.) 

Cibicides cicatricosus (Schwager). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 371, pi. 91,

figs. 25, 26. MR.

Cibicides floridanus (Cushman). Truncatulina floridana Cushman, 1918, U.S. Geol. Survey Bull. 676, p. 62, pi. 19, fig.

2. EO. 

Cibicides havanensis Cushman and Bermudez, 1937, Cushman

Lab. Foram. Research Contr., v. 13, p. 28, pi. 3, figs. 1-3.

EO. (PL 7, fig. 5.) 

Cibicides lobatulus (Walker and Jacob). Todd, 1965, U.S.

Natl. Mus. Bull. 161, pt. 4, p. 52, pi. 22, fig. 1. OMR. 

Cibicides tnacrocepJialus (Giimbel). Todd and Low, 1960, U.S.

Geol. Survey Prof. Paper 260-X, p. 852, pi. 258, fig. 4. E. 

Cibicides mauori (Cushman). Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 371, pi. 91, figs.

29, 30. R. 

Cibicides praecursorius (Schwager). Discorbina praeoursoria

Schwager, 1883, Palaeontographica, v. 30, p. 125, pi. 27

(4), fig. 12. O. (PI. 7, fig. 7.) 

Cibicides pseudoungerianus (Cushman). Truncatulina pseudounfferiana Cushman, 1922, U.S. Geol. Survey Prof. Paper

129-E, p. 97, pi. 20, fig. 9. Truncatulina ungeriana

d'Orbigny, sp. Brady, 1884, Challenger Rept., Zoology,

v. 9, p. 664, pi. 94, fig. 9. OMR.

Cibicides tuxpamensis Cole, 1928, Bull. Am. Paleontology, v. 14, 

no. '53, p. 219 (19), pi. 1, figs. 2, 3; pi. 3, figs. 5, 6. E.

Cibicidina danvillensis (Howe and Wallace) ? Cibicides 

danvillensis Howe and Wallace, 1932, Louisiana Geol. 

Bull. 2, p. 77, pi. 14, fig. 5. O.

Clavulina difformis Brady. Graham and Militante, 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 31, pi. 2, fig. 

16. R. (PI. 17, fig. 3.)

Conicospirillina semiinvoluta Cushman. Cushman, Todd, and 

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 357, 

pi. 88, fig. 38. R.

Cornuspira planorbis Schultze. Cushman, Todd, and Post, 1954, 

U.S. Geol. Survey Prof. Paper 260-H, p. 341, pi. 85, 

fig. 27. R.

Cycloclypeus carpenteri Brady. Cushman, Todd, and Post, 1954. 

U.S. Geol. Survey Prof. Paper 260-H, p. 347, pi. 82, fig. 9. 

R. (PI. 17, fig. 1.)

Cycloloculina cubensis Cushman and Bermudez, 1936, Cushman 

Lab. Foram. Research Contr., v. 12, p. 61, pi. 11, figs. 15, 

16. O. (PI. 7, fig. 6.)

Cymbaloporella tabellaeformis (Brady). Graham and Militante, 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, 

p. 107, pi. 18, fig. 1. R.

Cymbaloporetta bradyi (Cushman). Graham and Militante, 

1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 108, 

pi. 18, fig. 2. R.

Cymbaloporetta squammosa (d'Orbigny). Graham and Militante, 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, 

p. 108, pi. 18, fig. 3. R.

Darbyella&p- R. (PI. 18, fig. 3.)

The illustrated specimen exhibits a combination of 

structural features not normally found within a single 

specimen. The specimen starts out as a close-coiled 

Robulus, involute on both sides, consisting of about eight 

chambers and having slightly raised limbate curved 

sutures. In its later development, the specimen becomes 

progressively more evolute on one side only, and the 

sutures lose their limbation and become slightly depressed. 

The most unique feature seems to be the lack of a radiate 

aperture that is so characteristic of most of the genera 

in the family Lagenidae. The present specimen clearly 

shows the slit aperture described in the type species of 

Darbyella. Moreover, through the clear glassy keel it 

can be seen that each previous aperture consisted of a 

median slit rather than a series of radial slits, as in 

Robulus or Lenticulina. Only a single specimen was 

found.

Dentalina oommunis d'Orbigny. Nodosaria (D.) communi* 

d'Orbigny, Brady, 1884, Challenger Rept, Zoology, v. 9, 

p. 504, pi. 62, figs. 19-22. M. (PI. 12, fig. 1.)

Dentalina cooperensis Cushman, 1933, Cushman Lab. Foram. 

Research Contr., v. 9, p. 8, pi. 1, fig. 17. O.

Dentalina mucronata Neugeboren, 1856, Denkschr. Akad. Wiss. 

Wien, v. 12, p. 83, pi. 3, figs. 8-11. R.

Dentalina taurieornis (Schwager). Nodosaria tauricornte 

Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 228, 

pi. 6, fig. 61. M.

Dentalina sp. A. M. (PL 12, fig. 7.) 

Costa te.

Dentalina sp. B. O. 

Slender.

Dentalina sp. C. O.

Slender with broad dark sutures.
SMALLER FORAMINIFERA FROM GUAM 127

Dentalina sp. D. O. 

Lobulate.

Dentalinal spp. EM.

Discorbis balcombensis Chapman, Parr, and Coiling. Todd and 

Low, 1960, U.S. Geol. Survey Prof. Paper 260-X, p. 838, 

pi. 262, fig. 7. O.

Eggerella bradyi (Cushman). Cushman, 1937, Cushman Lab. 

Foram. Research, Spec. Pub. 8, p. 52, pi. 5, fig. 19. M.

Ehrenbergina albatrossi Cushman. Todd, 1965, U.S. Natl. Mus. 

Bull. 161, pt. 4, p. 47, pi. 21, figs. 2, 3. M. (PI. 15, fig. 2.)

Ellipsoglandulina labiata (Sehwager). Glandulina labiata 

Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 237, 

pi. 6, fig. 77. EO.

Ellipsopleurostomella sp. M. (PI. 12, fig. 16.)

Only one complete, one incomplete (see pi. 12, fig. 16), 

and three fragmentary pieces represent what is probably 

an undescribed species in this genus. The species is 

cylindrical and elongate, about 0.9 mm in length and 

0.2-0.3 mm in diameter, and the sutures show no indentation on the surface. The initial end is bluntly pointed 

and tapering. The apertural end is rounded, and the 

aperture is crescent shaped, having the wall on the concave side of the crescent outline slightly raised above 

the wall on the convex side. The broken side of the wall 

in the illustrated specimen permits a view of the internal 

tube that connects the previous apertures. Most of the 

sutures are only faintly visible, but it can be seen the 

several latest sutures are not equatorial but are curving 

and oblique to the axis of the test. This undescribed 

species is probably related to Ellipsopleurostomella 

stewarti Cushman and Siegfus from the Eocene and 

Oligocene Kreyenhagen Shale of California, but it is 

considerably slenderer and more elongate.

Elphidium advenum (Cushman). Cushman, Todd, and Post, 

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 345, pi. 86, 

fig. 30. R.

Elphidium crispum (Linne). Graham and Militante, 1959, 

Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 74, pi. 11, 

fig. 13. R.

Elphidium hyalocostatum Todd, 1957, U.S. Geol. Survey Prof. 

Paper 280-H, p. 300, pi. 88, fig. 19. R. (PI. 18, fig. 11.)

Elphidium jenseni (Cushrnan). Cushman, Todd, and Post, 1954, 

U.S. Geol. Survey Prof. Paper 260-H, p. 346, pi. 86, 

fig. 32. R.

Elphidium simplex Cushman. Cushman, Todd, and Post, 1954, 

U.S. Geol. Survey Prof. Paper 260-H, p. 346, pi. 86, fig. 

33. R.

Elphidium striatopunctatum (Fichtel and Moll). Todd, 1957, 

U.S. Geol. Survey Prof. Paper 280-H, p. 288 (table 4), 

pi. 88, fig. 21. R.

Elphidium spp. OM.

Enarttiomorphina sp. O.

A short arched fusiform specimen having indistinct, 

nonindented sutures that are horizontal on the convex 

side but make an upside-down-V-pattern on the concave 

side (referring to the arched axis). In shape the specimen 

resembles Nodosarella acus Cushman and Bermudez, but 

its radiate aperture and its suture pattern remove it 

from that species.

Epistomaroides polystomelloidcs (Parker and Jones). Gushman, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper 

260-H, p. 360, pi. 89, fig. 26. R.

Epistominella cf. E. obtusa (Burrows and Holland). Cushman,

Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper

260-H, p. 365, pi. 90, fig. 19. R. 

Epistominella rugosa ( Phleger and Parker). Pseudoparrella ( ?)

rugosa Phleger and Parker, 1951, Geol. Soc. America

Mem. 46, pt. 2, p. 28, pi. 15, figs. 8, 9. R.

Epistominella tubulifera (Heron-Alien and Earland). Cushman, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper

260-H, p. 365, pi. 90, fig. 20. R. 

Eponides duprei ciervoensis Cushman and Simonson. Todd and

Low, 1960, U.S. Geol. Survey Prof. Paper 260-X, p. 838,

pi. 260, fig. 7. O. (PI. 6, fig. 7.) 

Eponides kiliani (Andreae). Pulvinulina kiliani Andreae, 1884,

Abh. Geol. Spec.-Karte Elsass-Lothringen, v. 2, pt. 3, p.

163, pi. 11, fig. 1. O. 

Eponides ocalanus Cushman. Todd and Low, 1960, U.S. Geol.

Survey Prof. Paper 260-X, p. 838, pi. 256, fig. 7. E. 

Eponides repandus (Fichtel and Moll). Resig, 1962, Cushman

Found. Foram. Research Contr., v. 13, p. 55, pi. 14, figs.

1-9. R. (PI. 19, fig. 5.) 

Eponides sp. O. (PI. 6, fig. 1.)

A compact tightly coiled form, having seven chambers

in the final whorl. 

Fissurina alveolata (Brady). Lagena alveolata Brady, 1884,

Challenger Rept., Zoology, v. 9, p. 487, pi. 60, figs. 30,

32. M. 

Fissurina circulum Seguenza, 1862, Descrizione dei Foraminiferi

Monotalamici delle Marne Mioceniche del Distretto di

Messina, p. 63, pi. 2, fig. 15. M. (PI. 12, fig. 9.) 

Fissurina flmbriata (Brady). Lagena flmbriata Brady, 1884,

Challenger Rept., Zoology, v. 9, p. 486, pi. 60, figs. 26-28.

O. (PI. 4, fig. 8.) 

Fissurina formosa (Schwager). Lagena formosa Schwager,

1866, Novara Exped., Geol. Theil, v. 2, p. 206, pi. 4, fig. 19.

M, (PI. 12, fig. 10.) 

Fissurina globosa Bornemann, 1855, Deutsche Geol. Gesell.

Zeitschr., v. 7, p. 317, pi. 12, fig. 4. M. 

Fissurina lagenoides (Williamson). Entosolenia marginata

Montague var. lagenoides Williamson, 1858, On the Recent

Foraminifera of Great Britain, p. 11, pi. 1, figs. 25, 26. O. 

Fissurina spp. O.

Unornamented forms; one is nearly circular and has

a keel; another has a thickened peripheral band and a

protruding apertural end. 

Flintina, bradyana Gushman, 1921, U.S. Natl. Mus. Bull. 100,

v. 4, p. 467, pi. 94, fig. 2; text figs. 38-44. R. (PL 17,

fig. 5.) 

Frondicularia robusta Brady var. repanda Cushman, 1913, U.S.

Natl. Mus. Bull. 71, pt. 3, p. 83, pi. 29, figs. 1, 2. R.

(PL 18, fig. 2.) 

Gaudryina triangularis angulata Cushman. Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 331, pi. 83, fig. 14. R. 

Gaudryina trullissata Todd, in Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 331, pi. 83, fig.

15. R. 

Gaudryina (Siphogaudryina) rugulosa Cushman. Oushman,

Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 331, pi. 82, fig. 1. R. 

Gaudryina (Siphogaudryina) siphonifera (Brady). Cushman,

Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper

260-H, p. 331, pi. 83, fig. 17. R.
128 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

Gaudryina (Siphogaudryina) transversaria (Brady). Cushman, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper

260-H, p. 331, pi. 83, fig. 16. R. 

Gavelinopsis praegeri (Heron-Alien and Earland). Todd, 1965,

U.S. Natl. Mus. Bull. 161, pt. 4, p. 18, pi. 8, fig. 1. R. 

Gypsina globula (Reuss). Cushman, Todd, and Post, 1954, U.S.

Geol. Survey Prof. Paper 260-H, p. 373, pi. 91, fig. 39.

ER. 

Gypsina vesicularis (Parker and Jones). Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 373,

pi. 82, fig. 12. R. 

Gyroidina girardana (Reuss). Rotalina girardana Reuss, 1851,

Deutsche Geol. Gesell. Zeitschr., v. 3, p. 73, pi. 5, fig. 34.

O. (PI. 6, fig. 9.) 

Gyroidina lamarckiana (d'Orbigny). Todd, 1965, U.S. Natl.

Mus. Bull. 161, pt. 4, p. 19, pi. 6, fig. 3. O?M. 

Gyroidina nitidula (Sehwager). Rotalia nitidula Sehwager,

1866, Novara Exped., Geol. Theil, v. 2, p. 263, pi. 7, fig.

110. EO. 

Gyroidina soldanii d'Orbigny. Todd, 1965, U.S. Natl. Mus. Bull.

161, pt. 4, p. 19, pi. 6, fig. 4. M. 

Haddonia torresiensis Chapman. Todd and Low, 1960, U.S.

Geol. Survey Prof. Paper 260-X, p. 827, pi. 261, fig. 16. R. 

Halkyardia bikiniensis Cole, 1954, U.S. Geol. Survey Prof.

Paper 260-O, p. '584, pi. 210, figs. 1-5. EO. 

Hauerina diversa Cushman. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 337, pi. 84, figs.

30, 31. R. 

Hauerina involuta Cushman. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 337, pi. 84, figs.

28, 29. R. 

Hauerina milletti Cushman, 1954, in Cushman, Todd, and Post,

U.S. Geol. Survey Prof. Paper 260-H, p. 337, pi. 84, fig.

23. R. 

Hauerina pad flea Cushman, 1917, U.S. Natl. Mus. Bull. 71, pt. 6,

p. 64, pi. 21, fig. 2. R. 

Heterostegina suborbicularis d'Orbigny. Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 346,

pi. 82, figs. 7, 8; pi. 87, fig. 2. R.

Hoeglundina elegans (d'Orbigny). Epistomina elegans (d'Orbigny), Cushman, 1931, U.S. Natl. Mus. Bull. 104, pt. 8,

p. 65, pi. 13, fig. 6. R. 

Homotrema rubrum (Lamarck). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 373, pi. 82,

fig. 17; pi. 92, fig. 8; pi. 93, fig. 2. R. 

Karreriella bradyi (Cushman). Cushman, 1937, Cushman Lab.

Foram. Research Spec. Pub. 8, p. 135, pi. 16, figs. 6-11.

M. (PI. 12, fig. 8.) 

Karreriella chilostoma (Reuss). Cushman, 1937, Cushman Lab.

Foram. Research Spec. Pub. 8, p. 126, pi. 15, figs. 1-8. O. 

Karreriella sp. O.

A rough-walled specimen having a prominent initial

stage and later chambers not as overlapping as in

Karreriella chilostoma (Reuss) but somewhat separated

by depressed sutures. The aperture, although somewhat

obscured by matrix, appears to be surrounded by a rather

high sharp rim. 

Lagena gradlis Williamson. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 344, pi. 86,

fig. 18. M. 

Lagenonodosaria soalaris (Batsch). Asano, 1956, Tohoku Univ.

Sci. Repts., 2d ser. (Geology), v. 27, p. 26, pi. 6, figs.

5-7, 10. R.

Laticarinina pauperata (Parker and Jones). Cushman and 

Todd, 1942, Cushman Lab. Foram. Research Contr., v. 18, 

p. 15, pi. 4, figs. 1-6. M.

Liebusella bradyi (Cushman). Cushman, 1937, Cushman Lab. 

Foram. Research Spec. Pub. 8, p. 169, pi. 20, fig. 22. R.

Marginopora vertebralis Blainville. Cushman, Todd, and Post, 

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 348, pi. 82, 

figs. 5, 6. R.

Marginulina costata (Batsch). Brady, 1884, Challenger Rept., 

Zoology, v. 9, p. 528, pi. 65, figs. 10-13. R.

Marginulina glabra d'Orbigny. Christodoulou, 1960, Palaeontographica, sec. A, v. 115, pts. 1-6, p. 68, pi. 5, fig. 35. O.

Massilina durrandi (Millett). " Miliolina durrandi Millett, 1898, 

Royal Micros. Soc. Jour., p. 268, pi. 6, figs. 7-10. R.

Massilina secans (d'Orbigny). Miliolina secans d'Orbigny, sp., 

Brady, 1884, Challenger 'Rept., Zoology, v. 9, p. 167, pi. 6, 

figs. 1, 2. R.

Massilina secans reticulata Heron-Alien and Earland, 1915, 

Zool. Soc. London Trans., v. 20, p. 582, pi. 45, figs. 

1-4. R.

Miliolinella australis (Parr). Cushman, Todd, and Post, 1954, 

U.S. Geol. Survey Prof. Paper 260-H, p. 334, pi. 84, figs. 

3,4. R.

Miliolinella labiosa (d'Orbigny). Trilooulinella labiosa (d'Orbigny). Cushman, Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 334, pi. 84, figs. 5, 6. R.

Miliolinella oceanica (Cushman). Triloculina oceanioa Cushman, 1932, U.S. Natl. Mus. Bull. 161, pt. 1, p. 54, pi. 12, 

fig. 3. R.

Miliolinella oceanica var. flintiana (Oushman). Triloculina, 

oceanica Cushman var. flintiana Cushman, 1932, U.S. 

Natl. Mus. Bull. 161, pt. 1, p. 55, pi. 12, fig. 4. R.

Neoconorbina celsa (Todd). Disoorbis celsa Todd, 1957, U.S. 

Geol. Survey Prof. Paper 280-H, p. 299, pi. 67, fig. 20. O.

Neoconorbina crustata (Cushman). Todd, 1965, U.S. Natl. Mus. 

Bull. 161, pt. 4, p. 15, pi. 2, figs. 2, 3. R. (PI. 18, fig. 12.)

Neoconorbina fulva (Todd). Discorbis fulva Todd, 1957, U.S. 

Geol. Survey Prof. Paper 280-H, p. 299, pi. 90, fig. 8. R.

Neoconorbina patelliformis (Brady). Todd, 1965, U.S. Natl. 

Mus. Bull. 161, pt. 4, p. 16, pi. 2, fig. 1. R.

Neoconorbina tabemacularis (Brady). Disoorbina tabernacularis Brady, 1884, Challenger Rept., Zoology, v. 9, p. 648, 

pi. 89, figs. 5-7. R.

Neoconorbina terquemi (Rzehak). Todd, 1965, U.S. Natl. Mus. 

Bull. 161, pt. 4, p. 16, pi. 5, fig. 6. R,

Neoconorbina tuberocapitata (Chapman). Todd, 1965, U.S. 

Natl. Mus. Bull. 161, pt. 4, p. 17, pi. 1, figs. 8, 9. R.

Neorotalia floscula (Todd and Post). Rotalia floscula Todd 

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-N, 

p. 561, pi. 200, fig. 5. E.

Nodosarella aff. N. acus Cushman and Bermudez, 1937, Cushman Lab. Foram. Research Contr., v. 13, p. 19, pi. 2, 

figs. 10, 11. O.

Nodosarella robusta Cushman, 1943, Cushman Lab. Foram. Research Contr., v. 19, p. 92, pi. 16, fig. 8. O.

Nodosarella subcylindrica Cushman, 1943, Cushman Lab. Foram. 

Research Contr., v. 19, p. 91, pi. 16, figs. 4, '5. O.

Nodosaria afflnis Reuss? Todd and Low, 1960, U.S. Geol. Survey Prof. Paper 260-X, p. 828, pi. 255, fig. 10. E.

Nodosaria calomorpha Reuss. Brady, 1884, Challenger Rept.. 

Zoology, v. 9, p. 497, pi. 61, figs. 23-27. R. PI. 18, fig. 4.

Nodosaria consobrina (d'Orbigny). Dentalina consobrina 

d'Orbigny, 1846, Foraminiferes fossiles du bassin tertiaire de Vienne, p. 46, pi. 2, figs. 1-3. O.
SMALLER FORAMINIFERA FROM GUAM 129

Nodosaria equisetiformis Schwager, 1866, Novara Exped., Geol. 

Theil, v. 2, p. 231, pi. 6, fig. 66. M. (PI. 12, fig. 6.)

Nodosaria insecta Schwager, 1866, Novara Exped., Geol. Theil, 

v. 2, p. 224, pi. 5, figs. 53, 54. M.

Nodosaria lo-ngiscata d'Orbigny, 1846, Foraminiferes fossiles du 

bassin tertiaire de Vienne, p. 32, pi. 1, figs. 10-12. O.

Nodosaria skobina Schwager, 1866, Novara Exped., Geol. Theil, 

v. 2, p. 225, pi. 5, fig. 56. M.

Nodosaria aff. N. tosta Schwager, 1866, Novara Exped., Geol. 

Theil, v. 2, p. 219, pi. 5, fig. 42. O.

Nodosaria vertebralis (Batsch). Brady, 1884, Challenger Repts., 

Zoology, v. 9, p. 514, pi. 63, fig. 35; pi. 64, figs. 11-14. O.

Nonion boueanum (d'Orbigny). Cushman, 1939, U.S. Geol. 

Survey Prof. Paper 191, p. 12, pi. 3, figs. 7, 8. R.

Nonion japonicum Asano, 1938, Geol. Soc. Japan Jour., v. 45, 

no. 538, p. 593, pi. 15 (4), figs. 1, 2. R.

Nonion maoricum (Stache). Rosalina maorica Stache, 1864, 

Novara Exped., Geol. Theil, v. 1, sec. 2, p. 282, pi. 24, 

fig. 32. EO. (PI. 6, fig. 8.)

Nonion micrum Cole, 1927, Bull. Am. Paleontology, v. 14, no. 51, 

p. 22, pi. 5, fig. 12. O.

Nonion pacificum (Cushman). Cushman, 1939, U.S. Geol. Survey Prof. Paper 191, p. 25, pi. 6, fig. 25. R.

Nonion pompilioides (Fichtel and Moll). Cushman, 1939, U.S. 

Geol. Survey Prof. Paper 191, p. 19, pi. 5, figs. 9-12. M.

"Nonionella" minutissima Todd, 1952, U.S. Geol. Survey Prof. 

Paper 241, p. 24, pi. 3, fig. 30. O.

Nonionella sp. OM.

A small (0.23 mm) compressed form, having nine 

chambers in the final whorl.

Ntibeculina divaricata (Brady). Cushman, 1932, U.S. Natl. Mus. 

Bull. 161, pt. 1, p. 48, pi. 11, figs. 5, 6. R.

Nitbeculina divaricata advena Cushman. Cushman, 1932, U.S. 

Natl. Mus. Bull. 161, pt. 1, p. 49, pi. 11, fig. 8. R. (PI. 

17, fig. 2.)

Nuttallides trumpyi (Nuttall). Belford, 1958, Cushman Found. 

Foram. Research Contr., v. 9, p. 94, pi. 18, figs. 1-13; 

text figs. 1-3. E. (PI. 1, fig. 4.)

OoHna squamosa catenulata ( Williamson). Entosolenia squamosa var. catenulata Williamson, 1848, Annals and Mag. 

Nat. History, ser. 2, v. 1, p. 19, pi. 2, fig. 20. O.

Oolina n. sp. aff. 0. gibbera (Buchner). Lagena gibbera Buchner, 1940, Nova Acta Leopoldina, Deutschen Akad. Naturf., 

neue Folge, v. 9, no. 62, p. 423, pi. 3, figs. 48-50. O. (PI. 

4, fig. 12.)

Operculina ammonoides (Gronovius). Cushman, Todd, and 

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 346, 

pi. 87, fig. 1. R.

Oridorsalis umbonatus (Reuss). Todd, 1965, U.S. Natl. Mus. 

Bull. 161, pt. 4, p. 23, pi. 6, fig. 2. EOM. (PI. 6, fig. 5; 

pi. 13, fig. 5.)

Orthomorphina fijiensis (Cushman). Siphonodosaria fijiensis 

Cushman, 1931, Cushman Lab. Foram. Research Contr., 

v. 7, p. 30, pi. 4, fig. 10. M. (PI. 12, fig. 2.)

Orthomorphina parvula Todd, n. sp. EOM. (PI. 12, fig. 4.)

Test small for the genus, uniserial, straight, cylindrical, 

circular in transverse section, bluntly rounded at the 

initial end, produced into a slender neck at the opposite 

end; chambers few, about six, slightly inflated, overlapping each previous one as added, increasing only 

slightly in size as added; sutures distinct, slightly depressed ; wall smooth, unornamented; aperture terminal, 

circular, at the end of a long neck, surrounded by a narrow flaring lip. Length as much as 0.5 mm; diameter 

0.1 mm.

Holotype, USNM 642256, from Miocene (Tertiary g) 

beds of the Janum Formation at Lujuna Point, northeast 

coast of Guam, USGSf25805 (Rrl5-l).

This small and delicate species was found in only one 

sample of the Miocene. In the Eocene and Oligocene of 

Guam, a similar, possibly related, form is found. It 

differs mainly by being more tapering, by having a pointed 

not blunt initial end, by consisting of two or three more 

chambers, and by having a shorter apertural neck. These 

specimens are probably not identical with but are possibly 

related to or ancestral to Orthomorphina parvula.

Orthomorphina perversa (Schwager). Nodosaria perversa 

Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 212, 

pi. 5, fig. 29. M. (PI. 12, fig. 5.)

Orthomorphina rohri (Cushman and Stainforth). Nodogenerina 

rohri Cushman and Stainforth, 1945, Cushman Lab. 

Foram. Research Spec. Pub. 14, p. 39, pi. 5, fig. 26. E.

Osangularia culter (Parker and Jones). Todd, 1965, U.S. Natl. 

Mus. Bull. 161, pt. 4, p. 25, pi. 15, fig. 1. EOM. (PL 13,

fig. 7.) 

Pararotalia byramensis (Cushman). Todd and Low, 1960, U.S.

Geol. Survey Prof. Paper 260-X, p. 839, pi. 262, figs. 11,

12. O. (PI. 7, fig. 2.) 

Parrina bradyi (Millett). Cushman, Todd, and Post, 1954, U.S.

Geol. Survey Prof. Paper 260-H, p. 342, pi. 85, figs. SI34. R. 

Patellina advena var. altiformis Cushman. Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 357,

pi. 89, fig. 1. R. 

Paumotua terebra (Cushman). Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 361, pi. 89, fig.

28. R. 

Pegidia dubia (d'Orbigny). Todd, 1965, U.S. Natl. Mus. Bull.

161, pt. 4, p. 32, pi. 18, fig. 5. R. (PI. 19, fig. 1.) 

Peneroplis ellipticus d'Orbigny. Todd, 1957, U.S. Geol. Survey

Prof. Paper 280-H, p. 288 (table 4), pi. 89, fig. 1. R. 

Peneroplis proteus d'Orbigny. Todd, 1957, U.S. Geol. Survey

Prof. Paper 280-H, p. 288 (table 4), pi. 93, fig. 4. R. 

Placopsilina"! sp. Todd, 1962, U.S. Geol. Survey Prof. Paper

354-H, 1961, p. 187, pi. 22, figs. 3, 4; pi. 25, fig. 5d. R.

(PI. 17, fig. 1.) 

Planispirinella exigua (Brady). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 341, pi. 85,

fig. 28. R. 

Planodiscorbis rarescens (Brady). Discorbina rarescens Brady,

1884, Challenger Repts., Zoology, v. 9, p. 651, pi. 90, figs.

2, 3. R. 

Planorbulina acervalis Brady. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 372, pi. 82, fig. 14 ;

pi. 91, figs. 34-36. R. 

Planorbulinella larvata (Parker and Jones). Graham and

Militante, 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no.

2, p. 118, pi. 19, fig. 17. OR. 

Planorbulinoides retinaculatus (Parker and Jones). Todd and

Low, 1960, U.S. Geol. Survey Prof. Paper 260-X, p. 853,

pi. 262, fig. 5; pi. 263, fig. 10. R. 

Planulina wuellerstorfi (Schwager). Anomalina ^vuellerstorfi

Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 258,

pi. 7, figs. 105, 107. OM. 

Pleurostomella alternans Schwager, 1866, Novara Exped., Geol.

Theil, v. 2, p. 238, pi. 6, figs. 79, 80. M. (PI. 12, figs.

14, 15.)

797-972
130 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

Pleurostomella Merigi Palmer and Bermudez, 1936, Soc. cubana

hist. nat. Mem., v. 10, no. 5, p. 294, pi. 17, figs. 7, 8. O. 

Pleurostomella brevis Schwager, 1866, Novara Exped., Geol.

Theil, v. 2, p. 239, pi. 6, fig. 81. M.

Pleurostomella cubensis Cushman and Bermudez. Pleurostomella alasanensis Cushman var. cubensis Cushman and

Bermudez, 1937, Cushman I/ab. Foram. Research Contr.,

v. 13, p. 17, pi. 1, figs. 64, 65. EO. (PI. 4, fig. 11.) 

Pleurostomella naranjoensis Cushman and Bermudez, 1937,

Cushman Lab. Foram. Research Contr.. v. 13, p. 16, pi. 1,

figs. 59, 60. O. 

Pleurostomella sp. O. (PI. 4, fig. 10.)

A single specimen exhibits closely spaced distinct costae

over the initial half of the test. As ornamentation is

almost unknown in family Ellipsoidinidae, this specimen

seems to be noteworthy. 

Polymorphinella pacifica Cushman and Hanzawa. Cushman,

Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper

260-H, p. 344, pi. 86, figs. 23, 24. R. 

Pullenia bulloides (d'Orbigny). Cushman and Todd, 1943,

Cushman Lab. Foram. Research Contr., v. 19, p. 13, pi. 2,

figs. 15-18. OM. 

Pullenia sp. OM.

Flattened, four to five chambers. 

Pyrgo denticulata (Brady). Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 340, pi. 85,

fig. 22. R. 

Pyrgo denticulata var. striolata (Brady). Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 340,

pi. 85, fig. 23. R. 

Pyrgo murrhina (Schwager). Biloculina murrhina Schwager,

1866, Novara Exped., Geol. Theil. v. 2, p. 203, pi. 4, fig.

15. M. 

Pyrgo sp. EO.

Oval in outline and inflated. 

Pyrulina labiata (Schwager). Polymorphina labiata Schwager,

1866, Novara Exped., Geol. Theil, v. 2, p. 246, pi. 7, fig.

90. M. 

Quinqueloculina agglutinans d'Orbigny. Graham and Militante,

1959, Stanford Univ. Pub., Geol. 'Sci., v. 6, no. 2, p. 41,

pi. 4, fig. 10. R. (PI. 17, fig. 8.)

Besides the typical form of this species, such as specimens illustrated from Saipan (Todd, 1957, pi. 85, fig. 6)

and from the Philippines (reference above), there occur

a few specimens, similar to the one here illustrated, in

which the wall is less rough, the peripheral angles are

rounded, and the aperture is filled by a long bladelike

tooth, bifid at the tip. 

Quinqueloculina anguina var. arenata Said. Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 332, pi. 83, fig. 21. R. 

Quinqueloculina apicula Cushman, 1921, U.S. Natl. Mus. Bull.

100, v. 4, p. 422, pi. 88, figs. 1, 2. R. 

Quinqueloculina berthelotiana d'Orbigny. Cushman, 1932, U.S.

Natl. Mus. Bull. 161, pt. 1, p. 19, pi. 5, figs. 2-4. R. 

Quinqueloculina bidentata d'Orbigny. Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 332,

pi. 83, fig. 30 (erroneously given as fig. 31). R. 

Quinqueloculina bosciana d'Orbigny. Graham and Militante,

1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 43,

pi. 5, fig. 3. R. (PL 17, fig. 9.) 

Quinqueloculina distorqueata Cushman, in Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 333,

pi. 83, fig. 27. R.

Quinqueloculina ferussaci d'Orbigny. Fornasini, 1900, Accad.

Sci. 1st. Bologna Mem., ser. 5, v. 8, p. 9, fig. 8. R. 

Quinqueloculina lamarckiana d'Orbigny, 1839, Foraminiferes,

in de la Sagra, Histoire physique, politique et naturelle

de 1'Ile de Cuba, p. 189, pi. 11, figs. 14, 15. MR. 

Quinqueloculina neostriatula Thalmann. Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 333, pi.

83, fig. 28. R. 

Quinqueloculina parkeri (Brady). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 333, pi. 83,

fig. 23. R. 

Quinqueloculina poeyana d'Orbigny, 1839, Foraminiferes, in de

la Sagra, Histoire physique, politique et naturelle de 1'Ile

de Cuba, p. 191, pi. 11, figs. 25-27. R. (PI. 17, fig. 4.) 

Quinqueloculina polygona d'Orbigny. Todd, 1962, U.S. Geol.

Survey Prof. Paper 354-H, 1961, p. 187, pi. 22, fig. 5. R. 

Quinqueloculina cf. Q. seminulum (Linne). Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 333, pi. 83, fig. 29. R. 

Quinqueloculina subarenaria Cushman, 1917, U.S. Natl. Mus.

Bull. 71, pt. 6, p. 44, pi. 10, figs. 1, 2. R. 

Quinqueloculina subcuneata Cushman. Quinqueloculina crassa

var. subcuneata Cushman. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 333, pi. 83,

fig. 22. R. (PI. 17, fig. 6.) 

Quinqueloculina sulcata d'Orbigny. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 334, pi. 84,

figs. 1, 2. R. 

Quinqueloculina tubus Todd, 1957, U.S. Geol. Survey Prof. Paper

280-H, p. 306, pi. 85, fig. 18. R. 

Rectobolivina bifrons var. striatula (Cushman). Cushman,

1937, Cushman Lab. Foram. Research Spec. Pub. 9, p. 205,

pi. 23, figs. 17, 18. R. 

Rectoglandulina sp. O.

A single small (0.35 mm) specimen consisting of four

nearly equal and nonoverlapping chambers and a small

apertural chamber.

Reussella pulchra Cushman, 1945, Cushman Lab. Foram. Research Contr., v. 21, p. 34, pi. 6, figs. 11, 12. R. (PI. 18,

fig. 6.) 

Reussella simple® (Cushman). Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 354, pi. 88, figs.

1, 2. MR. 

Reussella sp. O. 

Robulus cf. R. clerioii (Fornasini). Cushman and Todd, 1945,

Cushman Lab. Foram. Research Spec. Pub. 15, p. 15, pi. 2,

fig. 11. O. 

Robulus limbosus (Reuss). Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 343, pi. 86. fig.

1. R. 

Robulus orbicularis (d'Orbigny). Asano, 1956, Tohoku Univ.

Sci. Repts., 2d ser. (Geology), v. 27, p. 49, pi. 1, figs. 19-

21. R. (PI. 18, fig. 1.) 

Robulus rotulns (Stache). Cristellaria rotula Stache, 1864,

Novara Exped., Geol. Theil, v. 1, sec. 2, p. 233, pi. 23,

fig. 12. O. 

Robulus vortex (Fichtel and Moll). Cushman, 1933, U.S. Natl.

Mus. Bull. 161, pt. 2, p. 5, pi. 2, fig. 1. R. 

Robulus spp. EOM.

Unornamented forms. 

Rosalina concinna (Brady). Todd, 1965, U.S. Natl. Mus. Bull.

161, pt. 4, p. 10, pi. 4, fig. 3. R. 

Rosalina floridana (Cushman). Todd, 1965, U.S. Natl. Mus.

Bull. 161, pt. 4, p. 10, pi. 3, figs. 1, 3; pi. 4, fig. 5. R.
SMALLER FORAMINIFERA FROM GUAM 131

Rosalind micens (Cushman). Todd, 1965, U.S. Natl. Mus. Bull.

161, pt. 4, p. 12, pi. 4, fig. 2. R. 

Rosalina rugosa d'Orbigny. Todd, 1965, U.S. Natl. Mus. Bull.

161, pt. 4, p. 12, pi. 4, fig. 1. R. 

Rosalina cf. R. wrightii (Brady). Discorbina Wrightii Brady,

1881, Annals and Mag. Nat. History, ser. 5, v. 8, p. 413,

pi. 21, fig. 2. O. 

Rosalind, sp. E. 

Rotaliammina mayori Cushman. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 342, pi. 85,

fig. 36. R. 

Rotorbinella mira (Cushman). Todd, 1965, U.S. Natl. Mus.

Bull. 161, pt. 4, p. 18. pi. 8, fig. 2. R. (PI. 18, fig. 13.) 

Saccammina sp. Proteonina sp. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 328, pi. 83,

fig. 1. R.

The generic change was necessitated by the demonstration (Loeblich and Tappan, 1955, p. 7, 8) that Proteonina

is a synonym of Reophax. 

Sagenina frondescens (Brady). Chapman, 1899, Linnean Soc.

Zoology Jour., v. 28, p. 4, pi. 1, figs. 1, 2; pi. 2, figs. 1, 2.

R. (PI. 17, fig. 1.) 

Saracenaria sp. O. (PI. 4, fig. 2.) 

Schlumbergerina alveoliniformis (Brady). Graham and Milltante, 1959, Stanford Univ. Pub., Geol. Sci., v. 6, no. 2,

p. 49, pi. 6, fig. 11. R. 

Siphogenerina raphana (Parker and Jones). Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p.

356, pi. 88, figs. 23, 24. R. 

Siphogenerina striata (Schwager). Dimorphina striata

Schwager, 1866, Novara Exped., Geol. Theil, v. 2, p. 251,

pi. 7, fig. 99. OM. (PI. 5, fig. 18.) 

Siphogenerina"! sp. O.

Coarsely spinose. 

Siphonina tubulosa Cushman. Todd, and Post, 1954, U.S. Geol.

Survey Prof. Paper 260-H, p. 361, pi. 89, figs. 29, 30. R. 

Siphoninoides echinatus (Brady). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 361, pi. 89,

figs. 31, 32. R. 

Sorites marginalis (Lamarck). Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 348, pi. 82,

fig. 4. R. 

Sphaeridia papillata Heron-Alien and Barland. Todd, 1957,

U.S. Geol. Surrey Prof. Paper 280-H, p. 290 (table 4), pi.

93, fig. 12. R. 

Sphaeroidina bulloides d'Orbigny. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 367, pi. 90,

fig. 39. MR. 

Spirillina decorata Brady. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 356, pi. 88, figs.

32,33. R. 

Spirillina denticulogranulata Chapman. Todd, 1962, U.S. Geol.

Survey Prof. Paper 354-H, 1961, p. 179 (table 1), pi. 23,

fig. 5. R. 

Spirillina tuberculatolimbata Chapman. Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 357,

pi. 88, fig. 34. R.

Spirillina vivipara Ehrenberg. Parker, 1958, Swedish DeepSea Exped. Repts., v. 8, Sediment Cores, no. 4, p. 264,

pi. 3, fig. 4. R. 

Spirillina vivipara var. revertens Rhumbler. Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 357, pi. 88, fig. 30. R.

Spirolina acicularis (Batsch). Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 348, pL 87, fig.

6. R. 

Spirolina arietina (Batsch). Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 348, pi. 87, figs.

4,5. R. 

Spiroloculina angulata Cushman. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 334, pi.

84, figs. 11, 12. R. 

Spiroloculina caduca Cushman. Todd, 1957, U.S. Geol. Survey

Prof. Paper 280-H, p. 286 (table 4), pi. 87, fig. 10. R. 

Spiroloculina clara Cushman. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper, 260-H, p. 335, pi. 84,

fig. 9. R. 

Spiroloculina communis Cushman and Todd. Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 335, pi. 84, fig. 13. R. 

Spiroloculina enfimia Cushman. Todd, 1957, U.S. Geol. Survey

Prof. Paper 280-H, p. 286 (table 4), pi. 87, fig. 12. R. 

Spiroloculina folium Todd, 1957, U.S. Geol. Survey Prof. Paper

280-H, p. 307, pi. 87, fig. 5. R. 

Spiroloculina foveolata Egger. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 335, pi. 84,

fig. 14. R. 

Spiroloculina hadai Thalmann. Graham and Militante, 1959,

Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 52, pi. 7,

fig. 3. R. 

Spiroloculina marshallana Todd, in Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 335, pi.

84, fig. 8. R. 

Spiroloculina rugosa Cushman and Todd, 1944, Cushman Lab.

Foram. Research Spec. Pub. 1], p. 66, pi. 9, figs. 9-13. R. 

Stilostomella aff. S. adelinensis (Palmer and Bermudez).

Ellipsonodosaria"! adelinensis Palmer and Bermudez,

1936, Soc. Cubana Hist. Nat. Mem., v. 10, no. 5, p. 299,

pi. 18, fig. 13. O. 

Stilostomella curvatura (Cushman). Ellipsonodosaria curvatura Cushman, 1939, Cushman Lab. Foram. Research

Oontr., v. 15, p. 71, pi. 12, fig. 6. O. (PI. 4, figs. 5, 6.) 

Stilostomella nuttalli (Cushman and Jarvis). Ellipsonodosaria

nuttalli Cushman and Jarvis, 1934, Cushman Lab. Foram.

Research Contr., v. 10, p. 72, pi. 10, fig. 6. E?O. 

Stilostomella recta (Palmer and Bermudez). Ellipsonodosaria

recta Palmer and Bermudez, 1936, Soc. Cubana Hist. Nat.

Mem., v. 10, no. 5, p. 297, pi. 18, figs. 6, 7. O. (PI. 4,

fig. 13.) 

Stilostomella subspinosa (Cushman). Ellipsonodosaria subspinosa Cushman, 1943, Cushman Lab. Foram. Research

Contr., v. 19, p. 92, pi. 16, figs. 6, 7. EO. 

Stilostomella verneuili (d'Orbigny). Beckmann, 1954, Eclogae

geol. Helvetiae, v. 46, no. 2, 1953, p. 372, pi. 21, figs. 39,

40. EOM. (PI. 4, fig. 4; pi. 12, fig. 3.) 

Stomatorbina concentrica (Parker and Jones). Mississippina

concentrica (Parker and Jones). Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 360,

pi. 89, fig. 27. R. (PI. 19, fig. 7.) 

Stomatorbina torrei (Cushman and Bermudez). Lamarckina

torrci Cushman and Bermudez, 1937, Cushman Lab.

Foram. Research Contr., v. 13, p. 21, pi. 2, figs. 24-26.

EO. (PI. 1, fig. 3.) 

Streblus beccarii (Linne). Todd, 1957, U.S. Geol. Survey Prof.

Paper 280-H, p. 290 (table 4), pi. 91, fig. 3. R.
132 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

Streblus beccarii tepida (Cushman). Todd, 1957, U.S. Geol.

Survey Prof. Paper 280-H, p. 290 (table 4), pi. 91, fig.

5. R. 

Streblus beccarii var. of Todd, 1957, U.S. Geol. Survey Prof.

Paper 280-H, p. 290 (table 4), pi. 91, fig. 4. R. (PI. 19,

fig. 6.) 

Svratkina australiensis (Chapman, Parr, and Collins). Discorbis tuberoulata (Balkwill and Wright) var. australiensis Chapman, Parr, and Collins, 1934, Linnean Soc.

Zoology Jour., v. 38, no. 262, p. 563, pi. 8, fig. 9. R. 

Textularia aaglutinans d'Orbigny. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 328, pi.

83, fig. 2. R. 

Textularia alveata Todd, 1957, U.S. Geol. Survey Prof. Paper

280-H, p. 307, pi. 85, fig. 12. R. 

Textularia cornea d'Orbigny. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 329, pi. 83,

fig. 4. R. 

Textularia dupla Todd, in Cushman, Todd, and Post, 1954, U.S.

Geol. Survey Prof. Paper 260-H, p. 329, pi. 83, fig. 6. R. 

Textularia foliacea Heron-Alien and Earland. Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 329, pi. 83, fig. 7. R. 

Textularia foliacea var. oceanica Cushman. Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 329, pi. 83, fig. 8. R. 

Textularia kerimbaensis Said. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 329, pi. 83, fig.

11. R. 

Textularia semialata Cushman. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 330, pi.

83, fig. 5. R.

Tretomphalus concinnus (Brady). Todd, 1957, U.S. Geol. Survey Prof. Paper 280-H, p. 292 (table 4), pi. 92, fig. 4. R. 

Tretomphalus planus Cushman. Todd, 1957, U.S. Geol. Survey

Prof. Paper 280-H, p. 292 (table 4), pi. 92, fig. 3. R. 

Trifarina bradyi Cushman. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 356, pi. 88,

fig. 21. MR. 

Triloculina cf. T. bassensis Parr. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 337, pi. 85,

fig. 14. R. 

Triloculina aff. T. bicarinata d'Orbigny. Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 338,

pi. 85, fig. 2. R. 

Triloculina earlandi Cusihman, in Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 338, pi. 85,

fig. 3. R. 

Triloculina incisiira Todd, 1957, U.S. Geol. Survey Prof. Paper

280-H, p. 308, pi. 86, fig. 18. R. 

Triloculina involuta Todd, in Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 338, pi. 85,

fig. 4. R. 

Triloculina irregularis (d'Orbigny). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 338, pi. 85,

fig. 12. R. 

Triloculina herimbatica (Heron-Alien and Earland). Cushman,

Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper

260-H, p. 339, pi. 85, figs. 10,11. R. 

Triloculina marshallana Todd, in Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 339, pi. 85,

fig. 13. R.

Triloculina oblonga (Montagu). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 339, pi. 85,

figs. 5-7. R. 

Triloculina spinata Cushman. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 339, pi. 85,

fig. 8. R.

Triloculina subgranulata Cushman, 1918, Carnegie Inst. Washington Pub. 213, p. 290, pi. 96, fig. 4. R. (PI. 17, fig. 7.) 

Triloculina subplanciana Cushman, in Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 339, pi. 85,

fig. 17. R. 

Triloculina terquemiana (Brady). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 340, pi. 85,

fig. 9. R. 

Triloculina transversestriata (Brady). Todd, 1957, U.S. Geol.

Survey Prof. Paper 280-H, p. 288 (table 4), pi. 85, fig.

16. R. 

Triloculina tricarinata d'Orbigny. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 340, pi. 85,

figs. 15, 16. R. 

Triloculina trigonula (Lamarck). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 340, pi. 85,

fig. 18. R. 

Triloculina sp. A. O.

Compressed and sharp angled. 

Triloculina sp. B. E.

Plump and rounded. 

Uvigerina ampullacea Brady. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 355, pi. 88, fig.

19. OR. 

Uvigerina porrecta Brady. Gushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 355, pi. 88, figs.

14, 15. R. 

Uvigerina proboscidea Schwager. Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 355, pi. 88,

fig. 18. M. 

Uvigerina proboscidea var. vadescens Cushman. Cushman,

Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper

260-H, p. 355, pi. 88, fig. 17. MR.

Vaginulinopsis sublittius multicamerata (Cushman and Stainforth). Harginulina sublituus (Nuttall) var. multicamerata Cusihman and Stainforth, 1945, Cushman Lab.

Foram. Research Spec. Pub. 14, p. 23, pi. 3, figs. 6, 7. O.

(PI. 4, fig. 3.) 

Vaginulinopsis'! sp. E.

A heavily costate fragment of the initial stage. 

Valvulina davidiana Chapman. Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 331, pi. 82, fig.

2. R. 

Valvulina martii Cushman and Bennudez. Todd and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-N, p. 553, pi. 198,

fig. 1. E. 

Valvulineriat sp. E.

A single specimen, having five chambers in the final

whorl and a distinctly porous wall. 

Vertebralina striata d'Orbigny. Graham and Militante, 1959,

Stanford Univ. Pub., Geol. Sci., v. 6, no. 2, p. 60, pi. 9,

figs. 11, 12. R. 

Virgulina colei Cusihman, 1937, Cushman Lab. Foram. Research

Spec. Pub. 9, p. 12, pi. 2, figs. 9,10. O. 

Virgulina zetina Cole. Cushman, 1937, Cushman Lab. Foram.

Research, Spec. Pub. 9, p. 7, pi. 1, figs. 18, 19. O. (PI. 5,

fig. 5.)
SMALLER FORAMINIFERA FROM GUAM 133

Vulvulina spinosa Gushman, 1927, Cushman Lab. Foram. Research Contr., v. 3, p. Ill, pi. 23, fig. 1. OM.

PLANKTONIC SPECIES

Candeina nitida d'Orbigny. Cushman, Todd, and Post, 1954, 

U.S. Geol. Survey Prof. Paper 260-H, p. 370, pi. 91, fig. 

15. MR. (PI. 14, fig. 10.)

Cassigerinella chipolensis (Cushman and Ponton). Blow and 

Banner, in Eames, Banner, Blow, and Clarke, 1962, 

Fundamentals of mid-Tertiary stratigraphical correlation, Cambridge Univ. Press, p. 81, pi. 15, figs. M, N. 

O. (PI. 8, fig. 3.)

Chiloguembelina cubensis (Palmer). Beckmann, 1957, U.S. 

Natl. Mus. Bull. 215, p. 89, pi. 21, fig. 21; text fig. 14, 

figs. 5-8. O. (PI. 8, figs. 1, 4.)

Globigerapsis index (Finlay). GloMgerinoides index Finlay, 

1939, Royal Soc. New Zealand Trans., v. 69, p. 125, pi. 

14, figs. 85-88. E. (PI. 2, figs. 1, 2.)

GloMgerina ampliapertura Bolli, 1957, U.S. Natl. Mus. Bull. 

215, p. 108, pi. 22, figs. 4-7. O. (PL 8, fig. 7.)

GloMgerina aff. G. apertura Cushman, 1918, U.S. Geol. Survey 

Bull. 676, p. 57, pi. 12, fig. 8. M. (PI. 14, fig. 5.)

GloMgerina conglomerate/, Schwager. Banner and Blow, 1960. 

Cushman Found. Foram. Research Contr., v. 11, p. 7, pi. 

2, fig. 3. EOM. (PI. 2, fig. 5; pi. 8, fig. 5; pi. 14, fig. 1.)

GloMgerina danvillensis Howe and Wallace, 1932, Louisiana 

Geol. Bull. 2, p. 74, pi. 10, fig. 9. O. (PI. 9, fig. 1.)

GloMgerina dissimilis Cushman and Bermudez, 1937, Cushman 

Lab. Foram. Research Oontr., v. 13, p. 25, pi. 3, figs. 

4-6. O. (PI. 8, fig. 6.)

GloMgerina eggeri Rhumbler. Bradshaw, 1959, Cushman 

Found. Foram. Research Contr., v. 10, p. 35, pi. 6, figs. 

5,8-10. R.

Globiget ina gortanii (Borsetti). GloMgerina turritilina Blow 

and Banner, in Eames, Banner, Blow, and Clarke, 1962, 

Fundamentals of mid-Tertiary stratigraphical correlation, Cambridge Univ. Press, p. 98, pi. 13, figs. D-G; 

postscript p. 146. EO. (PI. 2, fig. 3; pi. 10, figs. 6-8.)

GloMgerina hexagona Natland. Todd, 1964, U.S. Geol. Survey 

Prof. Paper 260-CC, p. 1080, pi. 292, fig. 3. M. (PI. 14, 

fig. 8.)

GloMgerina, increbescens Bandy, 1949, Bull. Am. Paleontology, 

v. 32, no. 131, p. 120, pi. 23, fig. 3. O. (PI. 11, fig. 1.)

GloMgerina nepenthes Todd, 1957, U.S. Geol. Survey Prof. Paper 

280-H, p. 301, pi. 78, fig. 7. M. (PI. 14, figs. 6, 7.)

GloMgerina opima nana (Bolli). Globorotalia opima nana 

Bolli, 1957, U.S. Natl. Mus. Bull. 215, p. 118, pi. 28, fig. 3. 

O. (PI. 9, figs. 3,4.)

GloMgerina pera Todd, 1957, U.S. Geol. Survey Prof. Paper 

280-H, p. 301, pi. 70, figs. 10, 11. E. (PI. 2, fig. 4.)

GloMgerina sellii (Borsetti). GloMgerina oligocaenica Blow 

and Banner, in Eames, Banner, Blow, and Clarke, 1962, 

Fundamentals of mid-Tertiary stratigraphical correlation, Cambridge Univ. Press, p. 88, pi. 10, figs. G, L-N; 

postscript p. 146. O. (PI. 10, figs. 1-5.)

GloMgerina senilis Bandy. GloMgerina ouachitaiensis var. 

senilis Bandy, 1949, Bull. Am. Paleontology, v. 32, no. 131, 

p. 121, pi. 22, fig. 5. O. (PI. 11, fig. 2.)

GloMgerina suteri (Bolli). Globorotaloides suteri Bolli, 1957, 

U.S. Natl. Mus. Bull. 215, p. 117, pi. 27, figs. 9-13. O. 

(PI. 9, fig. 2.)

GloMgerina tripartita tapuriensis Blow and Banner, in Eames, 

Banner, Blow, and Clarke, 1962, Fundamentals of midTertiary stratigraphical correlation, Cambridge Univ.

Press, p. 97, pi. 10, figs. H-K. O. (PL 11, fig. 3.) 

GloMgerina yeguaensis Weinzierl and Applin, 1929, Jour.

Paleontology, v. 3, p. 408, pi. 43, fig. 1. EO. (PI. 2, fig.

6; pi. 8, fig. 9.) 

GloMgerinella aequilateralis (Brady). Todd, 1965, U.S. Natl.

Mus. Bull. 161, pt. 4, p. 64, pi. 25, figs. 4, 5. MR. 

GloMgerinella danvillensis (Howe and Wallace). Nonion

danvillensis Howe and Wallace, 1932, Louisiana Geol.

Bull. 2, p. 51, pi. 9, fig. 3. O. (PI. 8, fig. 2.)

GloMgerinita glutinata (Egger). Todd, 1964, U.S. Geol. Survey Prof. Paper 260-CC, p. 1085. MR. 

GloMgerinoides conglobatus (Brady). Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 368,

pi. 91, fig. 12. MR. (PI. 14, fig. 4,) 

GloMgerinoides elongatus (d'Orbigny). Cushman, Todd, and

Post, 1954, U.S. Geol. Survey Prof. Paper 260-H, p. 368,

pi. 91, fig. 5. R. 

GloMgerinoides ruber (d'Orbigny). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 369, pi. 91,

fig. 6. R. 

GloMgerinoides sacoulifer (Brady). Cushman, Todd, and Post,

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 369, pi. 91,

fig. 7. MR. (PI. 14, fig. 3.) 

GloMgerinoides trilobus (Reuss). Hamilton and Rex, 1959, U.S.

Geol. Survey Prof. Paper 260-W, p. 792, pi. 253, figs.

17-19. O?M. (PI. 11, fig. 4.) 

Globoquadrina altispira (Cushman and Jarvis). Bolli, 1957,

U.S. Natl. Mus. Bull. 215, p. Ill, pi. 24, figs. 7, 8. M.

(PI. 14, fig. 2.) 

Globorotatia centralis Cushman and Bermudez. Todd, 1957,

U.S. Geol. Survey Prof. Paper 280-H, p. 268 (table 1),

pi. 71, figs. 1, 3. E. (PL 3, fig. 1.) 

Globorotalia fohsi robusta Bolli, 1957, U.S. Natl. Mus. Bull. 215,

p. 119, pi. 28, fig. 16. M. (PI. 16, fig. 5.) 

Globorotalia hirsiita (d'Orbigny). Parker, 1962, Micropaleontology, v. 8, no. 2, p. 236, pi. 5, figs. 10-15; pi. 6, fig. 1. MR.

(PL 16, fig. 2.) 

Globorotalia menardii (d'Orbigny). Cushman, Todd, and Post.

1954, U.S. Geol. Survey Prof. Paper 260-H, p. 370, pi.

91, fig. 19. K.

Globorotalia menardii fijiensis Cushman. Globorotalia menardii (d'Orbigny) var. fijiensis Cushman, 1934, B. P.

Bishop Mus: Bull. 119, p. 136, pi. 17, fig. 5. M. (PI.

15, fig. 8.) 

Globorotalia menardii nngulata Bermudez. Todd, 1964, U.S.

Geol. Survey Prof. Paper 260-CC, p. 1093, pi. 295, fig. 3.

M. (PL 16, fig. 3.) 

Globorotalia menardii-tnmida transition form. Globorotalia

(Globorotalia) menardii-tumida transition form, Todd,

1964, U.S. Geol. Survey Prof. Paper 260-CC, p. 1092, pi.

294, fig. 2. M. (PL 16, fig. 1.) 

Globorotalia spinuloinflata (Bandy). GloMgerina, spinuloinflata Bandy, 1949, Bull. Am. Paleontology, v. 32, no. 131,

p. 122, pi. 23, fig. 1. E. (PI. 3, fig. 2.) 

Globorotalia spinulosa Cushman. Todd, 1957, U.S. Geol. Survey

Prof. Paper 280-H, p. 268 (table 1), pi. 71, fig. 2. E.

(PL 3, fig. 4.) 

Globorotalia tumida (Brady). Cushman, Todd, and Post, 1954,

U.S. Geol. Survey Prof. Paper 260-H, p. 370, pi. 91, fig.

21 MR. (PL 16, fig. 4.) 

Globorotalia tumida flexuosa (Koch). Todd, 1964, U.S. Geol.

Survey Prof. Paper 260-CC. p. 1094, pi. 294, fig. 4. M.

(PL 16, fig. 6.)
134 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

Globorotalia wilcoxensis Cushman and Ponton, 1932, Cushman

Lab. Foram. Research Contr., v. 8, p. 71, pi. 9, fig. 10.

E. (PI. 3, fig. 3.) 

Hantkenina alabamensis Cushman. Todd and Low, 1960, U.S.

Geol. Survey Prof. Paper 260-X, p. 850, pi. 259, fig. 14. E. 

Hantkenina inflata Howe, 1928, Jour. Paleontology, v. 2, p. 14,

text fig. 2. EO. (PI. 1, fig. 2; pi. 8, fig. 8.) 

Hastigerina pelagica (d'Orbigny). Todd, 1965, U.S. Natl. Mus.

Bull. 161, pt. 4, p. 68, pi. 26, fig. 7. M. (PI. 15, fig. 7.) 

Orbulina bilobata (d'Orbigny). GloMgerina bilobata d'Orbigny,

1846, Foraminiferes fossiles du bassin tertiaire de Vienne,

p. 164, pi. 9, figs. 11-14. M. 

Orbulina suturalis Bronnimann. Todd, 1964, U.S. Geol. Survey

Prof. Paper 260-CC, p. 1087, pi. 290, fig. 1. M. (PL 15,

figs. 1, 4.) 

Orbulina universa d'Orbigny, 1846, Foraminiferes fossiles du

bassin de Vienne, p. 22, pi. 1, fig. 1. MR. 

Pulleniatina obliquiloculata (Parker and Jones). Cushman,

Todd, and Post, 1954, U.S. Geol. Survey Prof. Paper

260-H, p. 369, pi. 91, fig. 11. MR. (PI. 14, fig. 9.) 

Sphaeroidinella dehiscens (Parker and Jones). Cushman, Todd,

and Post, 1954, U.S. Geol. Survey Prof. Paper 260-H,

p. 369, pi. 91, fig. 14. MR.

Sphaeroidinella disjuncta Finlay. Todd, 1964, U.S. Geol. Survey Prof. Paper 260-CC, p. 1089, pi. 290, figs. 2, 4. M.

(PI. 15, fig. 6.) 

Sphaeroidinella Jcochi (Caudri). Todd, 1964, U.S. Geol. Survey

Prof. Paper 260-CC, p. 1088, pi. 289, figs. 5, 6. M. (PI.

15, fig. 3.) 

Sphaeroidinella seminulina (Schwager). GloMgerina seminulina Schwager, 1866, Novara Exped., Geol. Theil, v. 2,

p. 256, pi. 7, fig. 112. M. (PI. 15, fig. 5.)

LIST OF LOCALITIES

For Tertiary localities refer to Tracey and others 

(1964, pi. 2), and for Recent localities refer to Emery 

(1962, figs. 14,37, and 51A).

Eocene (Tertiary b)

USGSNo.

f25817-

f25818.

Field No.

Ei 4-1 

Jl 2-1

Description of locality

Exposure at connecting road 

between north and south roads 

in Naval Ammunition Depot to 

summit of Mount Alifan. 

Ledge outcrop approximately 1% 

miles northeast of Yona and 

from 50 to 100 ft north of the 

old road between Yona and the 

abandoned radio station.

Oligocene (Tertiary c)

f25813.

f25814, 

f25815, 

f25816.

Hi 6-1

Gj 11-1 

Gj 13-1, 

Gj 14-1.

Reyes' Ranch overlooking Mahlac 

River, about halfway between 

ranchhouse and valley floor.

Intersection of access road with 

Naval Ammunition Depot 2-AT 

bunkers area (NAD loop).

Miocene (Tertiary for g)

USGS No.

f25805,--_-_

f25806 _____

f25807---__-

f25808.._--_ 

f25809_-----

f25810.----_

f25811__--_-

Field No.

Rr 15-1 

Rr 14-1 

Ts 5-10 

Ts 5-7 

Ts 5-6 

Ts 5-5 

Uu 1-3

Description of locality

Lujuna Point, northeast coast of 

Guam; tuff bed about 70 ft 

above sea level. 

Lujuna Point, northeast coast of 

Guam; about 6 ft below Rr 

15-1. 

Catalina Point, northeast coast of 

Guam ; limestone at base of 

formation. 

Catalina Point, northeast coast of 

Guam ; 50 ft below upper tuff 

bed. 

Catalina Point, northeast coast of 

Guam ; 30 ft below upper tuff 

bed. 

Catalina Point, northeast coast of 

Guam; 10 ft below upper tuff 

bed. 

Anao Point, northeast coast of 

Guam; approximately 10 ft 

below dense white limestone.

Recent

USGS No.

f 25696-----.-

.25697-.----

f25698_.-----

f 25699.. -.- _-

f 25700---.---

f25701__----_

f25702_----__

f25703__----_

f25704_ ______

f25705_----_-

f25706-.-----

f 25707-------

f 25708.-- -_ _

f 25709.-----

-

f 25710-----.-

f25711-_---_

f25712___.-__

f25713_----_-

f25714,-_----

f 25715-------

f25716-------

f25717-----__

f25718-.----_

f25719__---_-

f25720_------

f25721. ------

f 25722.------

f 25723-..-- ..

f 25724__- ____

f25725_-.---_

f25726_-_-_--

f 25727.------

Field No.

7 

26 

32 

59 

63 

78 

83 

86 

87 

88 

89 

90 

91 

92 

93 

94 

95 

109 

127 

131 

141 

151 

155 

160 

170 

182 

193 

200 

201 

212 

213 

214

Lat N.

13° 15. 9' 

29. 0 

37. 0 

30. 3 

30. 2 

22. 3 

34. 6 

28. 7 

28. 7 

28. 7 

28. 7 

28. 8 

28.8 

28. 8 

28.8 

28. 9 

28.9 

25. 2 

25.2 

25. 1 

25.0 

25. 0 

25.0 

25.0 

24.9 

24.9 

21.3 

14.5 

14.3 

14.7 

14.7 

14.7

Long E.

144° 44. 2' 

52. 1 

53.9 

47.6 

47.4 

38.9 

49. 7 

45. 6 

45.5 

45.5 

45. 5 

45.5 

45. 5 

45.5 

45. 5 

45.5 

45.5 

47.0 

47. 1 

47. 1 

47. 1 

47. 2 

47.2 

47.2 

47.2 

47.2 

46. 1 

39.3 

39. 1 

42.0 

42.0 

42.0

Depth 

(feet)

Beach 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Reef 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Beach 

4 

13 

21 

39 

45 

65 

75 

87 

Beach 

Do. 

Do. 

Do. 

Reef 

Do.
SMALLER FORAMINIFERA FROM GUAM 135

Recent

USGS No.

f 25728.-. __._

f 25729.- _____

f25730___--._

f25731____--.

f 25732.- ____ -

f 25733.-. ._ _-

f 25734- __.- _

f 25735. _____ _

f 25736. __. ._-

f 25737-.- --_.

f 25738.- --.__

f 25739.. _____

£25740. ______

f 25741. -__._ _

f 25742-...-..

f25743. ------

f 25744..... _ _

£25745. ______

£25746. ______

£25748. ______

£25749. ______

£25750-_--___

£25751.. _____

f 25752.. -_...

£25753_-.--__

£25754........

£25755 _--._.

f25756_ ______

£25757. ______

£25758--.....

£25759.. _____

£25760 . . .

£25761. ___

£25762..---..

f 25763-_ __.

£25764.... _ .

£25765. _._._

£25766 .

£25767 .

£25768....

£25769.- __..

f 25770.-.. _.

£25771. _____

£25772. _____

£25773

£25774 _

£25775_ _.

£25776.___

£25777_____.

£25778__.__

£25779___.__

f 25780. _

f 25781 _____

£25782

£25783 ._-

£25784. ____

£25785--. __

£25786

£25787 . ..

£25788 ___

Field No.

215 

216 

217 

218 

219 

220 

275 

279 

286 

299 

302 

306 

348 

378 

422 

423 

450 

451 

462 

468 

470 

472 

473 

510 

523 

524 

532 

533 

537 

540 

541 

543 

545 

546 

547 

549 

551 

553 

555 

556 

558 

559 

561 

562 

563 

577 

584 

596 

602 

607 

610A 

611 

615 

644 

645 

649 

652 

653 

660 

661

LatN.

3° 14.7' 

14.6 

14.6 

14.6 

14.5 

14.5 

25.3 

25.2 

25.1 

25.0 

24.9 

24.9 

15.7 

15.0 

14.6 

14.7 

14 4 

14.4 

15.9 

15. 8 

15.8 

15.8 

15.7 

14 8 

15.5 

15. 5 

15.8 

15.8 

16. 1 

15. 5 

15.4 

15. 3 

15.4 

15. 3 

15. 3 

15. 3 

15. 4 

15. 3 

15. 3 

15. 3 

15. 3 

15. 3 

15. 3 

15. 3 

15. 3 

14.7 

14 6 

149 

15. 2 

16. 17 

16.23 

16. 31 

17. 33 

25.4 

25. 4 

25. 4 

25. 3 

25. 3 

40.0 

39. 0

Long E.

144° 42. 0' 

42.0 

42.0 

42.0 

42.0 

42.0 

47.1 

47.2 

47.3 

47.0 

47.1 

47.2 

29.8 

38.5 

39.1 

39.1 

39.0 

39. 1 

39. 7 

39. 8 

39. 8 

39. 8 

39.8 

39. 3 

39. 7 

39. 6 

40. 0 

40.0 

39.6 

40.2 

40. 3 

40. 2 

40. 1 

40. 0 

40.0 

39.9 

39.8 

39.7 

39. 6 

39. 5 

39.4 

39. 3 

39.2 

39. 2 

39. 1 

41. 2 

41. 3 

41. 2 

41. 2 

39. 28 

39. 10 

38.97 

39. 22 

47. 3 

47. 3 

47. 4 

47. 4 

47. 4 

50. 0 

50. 4

Depth

(feet)

Reef 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

5 

21 

7 

8 

4 

3.5 

68 

67 

90 

70 

15 

9 

11 

55 

Beach 

2 

44 

5 

Beach 

1. 5 

2 

4 

11 

9 

18 

26 

38 

43 

21 

6 

8 

8 

3 

43 

70 

38 

6 

115 

165 

315 

37 

Beach 

Reef 

Do. 

Do. 

Do. 

810 

690

Recent

USGS No. Field No. Lat N. Long E. Depth 

(feet)

£25789---.... 662 13° 41. 5' 144° 50. 3' 1,170

£25790_. ---_. 663 29.8 541 972

£25791.. _-.__ 664 22.0 47.2 570

£25792.-_-_._ 665 15.6 38.3 1,000

£25793 __-_-- 673 25.0 47.1 Reef

£25794._--__. 682 25.0 47.1 Do.

REFERENCES CITED

Atwill, E. R., 1935, Oligocene Tumey formation of California : 

Am. Assoc. Petroleum Geologists Bull., v. 19, p. 1192-1204. 

Bandy, O. L., 1964, Cenozoic planktonic foraminiferal zonation : 

Micropaleontology, v. 10, p. 1-17, figs. 1-6. 

Beckmann, J. P., 1957, Chiloguembelina Loeblich and Tappan 

and related Foraminifera from the lower Tertiary of Trinidad, B.W.I.: U.S. Natl. Mus. Bull. 215, p. 83-95, pi. 21, 

figs. 14-16. 

Blow, W. H., 1959, Age, correlation, and biostratigraphy of the 

upper Tocuyo (San Lorenzo) and Pozon formations, eastern 

Falcon, Venezuela : Bull. Am. Paleontology, v. 39, no. 178, 

p. 67-251, pis. 6-19, figs. 1-5, charts 1^. 

Blow, W. H., and Banner, F. T., 1962, The mid-Tertiary (upper 

Eocene to Aquitanian) Globigerinaceae, in Eames, F. E., 

and others, Fundamentals of mid-Tertiary stratigraphical 

correlation : New York, Cambridge Univ. Press, p. 61-163, 

pis. 7-17, figs. 6-20. 

Bolli, H. M., 1957a, The genera GloMgerina and Globorotalia in 

the Paleocene-lower Eocene Lizard Springs formation of 

Trinidad, B.W.I. : U.S. Natl. Mus. Bull. 215, p. 61-81, pis. 

15-20, figs. 11-13. 

 1957b, Planktonic Foraminifera from the OligoceneMiocene Cipero and Lengua formations of Trinidad, B.W.I. : 

U.S. Natl. Mus. Bull. 215, p. 97-123, pis. 22-29, figs. 17-21. 

 1957c, Planktonic Foraminifera from the Eocene Navet

and San Fernando formations of Trinidad, B.W.I.: U.S. 

Natl. Mus. Bull. 215, p. 155-172, pis. 35-39, figs. 25, 26. 

1959, Planktonic Foraminifera as index fossils in Trinidad, West Indies and their value for worldwide stratigraphic 

correlation : Eclogae geol. Helvetiae, v. 52, no. 2, p. 627-637, 

table 1 [I960]. 

Cole, W. S., 1963, Tertiary larger Foraminifera from Guam: 

U.S. Geol. Survey Prof. Paper 403-E, p. E1-E28, pis. 1-11, 

fig. 1. 

Cole, W. S., Todd, Ruth, and Johnson, C. G., 1960, Conflicting 

age determinations suggested by Foraminifera on Yap, 

Caroline Islands (includes appendix, Larger Foraminifera 

from Yap, by W. S. Cole and Smaller Foraminifera from 

Yap, by Ruth Todd) : Bull. Am. Paleontology, v. 41, no. 186, 

p. 73-112, pis. 11-13, fig. 1. 

Cushman, J. A., Todd, Ruth, and Post, R. J., 1954, Recent 

Foraminifera of the Marshall Islands: U.S. Geol. Survey 

Prof. Paper 260-H, p. 319-384, pis. 82-93, figs. 116-118. 

Drooger, C. W., 1956, Transatlantic correlation of the OligoMiocene by means of Foraminifera : Micropaleontology, v. 2, 

p. 183-192, pi. 1, fig. 1. 

1964, Problems of mid-Tertiary stratigraphic interpretation : Micropaleontology, v. 10, p. 369-374, figs. 1, 2.
136 GEOLOGY AND HYDROLOGY OF GUAM, MARIANA ISLANDS

Eames, F. E., Banner, F. T., Blow, W. H., and Clarke, W. J., 

1962, Fundamentals of mid-Tertiary stratigraphical correlation: New York, Cambridge Univ. Press, 163 p., 17 pis., 

20 figs.

Emery, K. O., 1962, Marine geology of Guam: U.S. Geol. Survey 

Prof. Paper 403-B, p. B1-B76, pi. 1, figs. 1-65.

Ericson, D. B., Ewing, Maurice, and Wollin, Goesta, 1963, Pliocene-Pleistocene boundary in deep-sea sediments: Science, 

v. 139, no. 3556, p. 727-737, figs. 1-14.

Glaessner, M. F., 1943, Problems of stratigraphic correlation in 

the Indo-Pacific region: Royal Soc. Victoria Proc., v. 55, pt. 

1 (new ser.), p. 41-80, chart.

 1959, Tertiary stratigraphic correlation in the Indo-Pacific region and Australia: Geol. Soc. India Jour., v. 1, p. 

53-67, table 1.

Hamilton, E. L., 1953, Upper Cretaceous, Tertiary, and Recent 

planktonic Foraminifera from Mid-Pacific fiat-topped seamounts: Jour. Paleontology, v. 27, p. 204-237, pis. 29-32, 

figs. 1-5.

Hamilton, E. L., and Rex, R. W., 1959, Lower Eocene phosphatized Globigerina ooze from Sylvania Guyot: U.S. Geol. 

Survey Prof. Paper 260-W, p. 785-798, pis. 250-254, fig. 255.

Hanzawa, Sh6shir6, 1964, The phylomorphogeneses of the Tertiary foraminiferal families, Lepidocyclinidae and Miogypsinidae: Tohoku Univ. Sci. Repts., 2d ser. (Geology), v. 35, 

no. 3, p. 295-313.

Leupold, Wolfgang, and Vlerk, I. M. van der, 1931, The Tertiary: 

Leidsche Geol. Meded., v. 5, p. 611-O48, 2 tables.

Saito, Tsunemasa, 1962, Notes on GloMgerina nepenthes Todd, 

1957: Palaeont. Soc. Japan Trans. Proc., new sen, no. 48, 

p. 331-342, pis. 51, 52, figs. 1, 2.

 1963, Miocene planktonic Foraminifera from Honshu, 

Japan: Tohoku Univ. Sci. Repts., 2d ser. (Geology), v. 35, 

no. 2, p. 123-209, pis. 53-56, figs. 1-15.

Stainforth, R. M., 1960, Current status of transatlantic OligoMiocene correlation by means of planktonic Foraminifera; 

Rev. Micropaleontologie, v. 2, p. 219-230, range chart.

Takayanagi, Yokichi, and Saito, Tsunemasa, 1962, Planktonic 

Foraminifera from the Nobori Formation, Shikoku, Japan: 

Tokohu Univ. Sci. Repts., 2d ser. (Geology), spec. v. 5 

(Kon'no Mem. Volume), p. 67-105, pis. 24-28, figs. 1-3.

Thalmann, H. E., 1942, Hantkenina in the Eocene of East Borneo : Stanford Univ. Pub., Univ. Ser., Geol. Sci., v. 3, no. 1, 

p. 1-24, figs. 1, 2.

Todd, Ruth, 1957, Smaller Foraminifera, in Geology of Saipan, 

Mariana Islands. Part 3, Paleontology: U.S. Geol. Survey 

Prof. Paper 280-H, p. 265-320, pis. 2, 4, 64-93, tables 1-4.

 1964, Planktonic Foraminifera from deep-sea cores off 

Eniwetok Atoll, in Bikini and nearby atolls, Marshall 

Islands: U.S. Geol. Survey Prof. Paper 260-OC, p. 1067- 

1100, pis. 289-295, figs. 319, 320.

Todd, Ruth, and Low, Doris, 1960, Smaller Foraminifera from 

Eniwetok drill holes: U.S. Geol. Survey Prof. Paper 260-X, 

p. 799-861, pis. 255-264, figs. 256-259, tables 1-7.

Todd, Ruth, and Post, Rita, 1954, Smaller Foraminifera from 

Bikini drill holes, in Bikini and nearby atolls. Part 4, 

Paleontology: U.S. Geol. Survey Prof. Paper 260-N, p. 

547-568, pis. 198-203, fig. 166.

Tracey, J. L, Jr., Schlanger, 'S. O., Stark, J. T., Doan, D. B., 

and May, H. G., 1964, General geology of Guam: U.S. Geol. 

Survey Prof. Paper 403-A, p. A1-A104, pis. 1-3, figs. 1-53.

Vlerk, I. M. van der, 1955, Correlation of the Tertiary of the 

Far East and Europe: Micropaleontology, v. 1, p. 72-75, 

tables 1, 2.

Vlerk, I. M. van der, and Umbgrove, J. H. F., 1927, Tertiaire 

Gidsforaminiferen van Nederlandsch Oost-Indie Wetenschappelijke Mededeel., no. 6, p. 1-35, figs. 1-24.
INDEX

A Page

acervalis, Planorbulina____.... ___--__...... 120,29

Acervulina inluierens-----.............. ....... 20,23

sp_. - -- ________..______ 20,23

acicularis, Spirolina..__ __________..___ ie,31

acus, Nodosarella.......... _______-___._- 6,27,28

adelinensis, EUipsonodosaria.................. 31

StUostomella... ____......__._....... 6,31

advena altiformis, Patellina..... _________ 18,29

Nubeculina divaricata....___... 14, 29; pi. 17

advenum, Elphidium. __________....___ 18,27

aequilateralis, Olobigerinella.........__.___. 12,20,33

affinis, Nodosaria..............______ .._._ 2,28

agglutinans, Quinqueloculina.....______ 14, 30; pi. 17

Textularia...----__._________..____..__..._ 14,32

aggregata, Bdelloidina.. ______________ 16,24

aguafrescaensis, Bulimina__________________ 10,11,25

alabamensis, Hantkenina......._____________. 1,3,34

Alabamina conica....___...__.__.__.. 2, 4,6,23; pi. 6

alazanensis, Bulimina-_______________. 5, 6, 25; pi. 5

cubensis, Pleurostomella...________________ 30

albatrossi, Angulogerina_____._________________ 18,24

Ehrenbergina..____________________ 12, 27; pi. 15

Alliatina translucens..___.... _______. 20,23

alternans, Pleurostomella..__...___.. n, 12,29; pi. 12 

altiformis, Patellina advena..........__.___.___ 18,29

altispira, Globoquadrina......_..... 7, 9,12,33; pi. 14

alveata, Textularia....__..____.._____.____..__ 14,32

alveolata, Fissurina_.___.__.__..._....________ n,27

Lagena.......___.........__.._.__..______ 27

alveoliniformis, Ammomassilina........_______ 14,23

Massilina---.__.._________._______.______ 23

Schlumbergerina.........___..____..__..__ 14,31

Ammomassilina alveoliniformis...._.__........ 14,23

ammonoides, Operculina_.__..__..____ ________ 16,29

Amphimorphina californica....__..____._____ 4,6,23

Amphistegina bikiniensis............_.____..__ 2,23

/e»»ow«.-----.--- ................. 18,23,24

madagascariensis _....___________.____ 13,18,23

radiata......___________________________ 18,23,24

papillosa...__..__....___._____.______ 18,23

ampliapertura, Olobigerina..._.__..__ 3, 4,7,33; pi. 8 

ampullacea, Uvigerina....__..______________ 6,18,32

anguina arenata, Quinqueloculina..._____.___. 14,30

angulata, Qaudryina triangularis.............. 14, 27

Spiroloculina..-..________________________ 14,31

Angulogerina albatrossi......-._-_____.________ 18,24

byramensis......................... 4, 6,24; pi. 5

cooperensis .................... 4, 6, 24; pi. 5

vicksburgensis________.__ 4, e, 24; pi. 5 

s&- .............................. 6,24

angulosa, Cassidulina..._._.... ....__ 12, 25; pi. 13

Anomalina coronata...__..._.._. ...._ 20, 24; pi. 19

glabrata.........______________ 20,24

«rano*a _________________ 4, 7, 24; pis. 6, 7

maculosa .......________........ 20,24

wuellerstorfi.__..__. ...._._______ 29

apertura, Olobigerina___________ 12, 33; pi. 14 

apicula, Quinqueloculina...__._..____________ 14,3o

arenata, Quinqueloculina anguina____.._...__. 14,30

arietina, Spirolina...._____.__ _____._........ 16,31

Articulina pacifica.......__.._________________ 14, 24

sp-- ..___________________ 14, 24; pi.' 17

Astacolus bradyi___.__....__..________ ig, 24; pi. 18

californicus..................__..__ _ 16,24

planulatus._______ ____.____ 16, 24; pi. 18

Asterigerina marshallana__..__..___. _...... 2,6,24

Asterigerinata bracteata...........___.._ 4,6,24

Page 

Astrononion australe.-.................. 17, 24; pi. 6

novozealandicum................... 12, 24; pi. 12

pusillum................._........... 7, 24; pi. 6

australe, Astrononion __________ 7, 24; pi. 6

australiensis, Discorbis tuberculata............. 32

Svratkina................................. 18,32

australis, Miliolinella..._.___....._._......... 14,28

Baculogypsina sphaerulata................. 13,18,24

Bagginapana......................... ..._ 4,6,24

totomiensis ..........__ .__..__ 18, 24; pi. 19

balcombensis, Discorbis.................. ..._ 6,27

bassensis, Triloculina. _.................._.... 14,32

Bdelloidina aggregata___..__________ 16,24 

beccarii, Streblus.......__._......... 18,31, 32; pi. 19

tepida, Streblus........................... 18,32

bengalensis, Osangularia....._..............._. 11

Pulmnulinella....................__..___. 10

berthelotiana, Quinqueloculina................. 14,30

beyrichi, Bolivina....................._. 4, 6, 24; pi. 5

bicarinata, Triloculina..................._..... 14,32

bidentata, Quinqueloculina..................... 14,30

bierigi, Pleurostomella.____................... 5,6,30

Bifarina.__..........__._..............___.... 25

bifrons striatula, Rectobolivina. ....____.. 16,30

bikiniensis, Amphistegina_.___...._........._. 2, 23

Halkyardia__.._.___._.__.............. 3,5,6,28

bilobata, Olobigerina..__._____................. 34

Orbulina................................ 7,12, 34

Biloculina murrhina..._...._._____.___._..... 30

Biloculinella globula......_._.___._..... 16, 24; pi. 17

bleeckeri, Bulimina.............. .__. 5, 6, 25; pi. 5

Bolivina beyrichi......._______........ 4, 6, 24; pi. 5

choctawensis............................. 2, 5,24

compacta. __...__......................... 16,24

fastigia........_______._........... 4, 6, 24; pi. 5

gardnerae.-----_-_-._.................... 4,6,24

hantkeniana......................... 16,24; pi. 18

minutissima...._................. 4, 6, 24; pi. 5

nitida.........___......._................. 11,24

oligocaenica....____............... 4, 6, 24; pi. 5

paula...___..._._.......__................ 6,24

plicatettamera...____._........... 5, 6, 24; pi. 5

pseudopygmaea..._._..........._......... 16,24

pusilla................................. 10,11, 24

rhomboidalis...................... 6,16, 24; pi. 5

robusta___.................._..._..._..... 16,24

silvestrina.........______........ 10,11, 24; pi. 12

sinuata.........___...__....___... 11, 24; pi. 12

spinescens..._______...................... 16,24

striatula..., . 16,25

tortuosa................................. 6,16, 25

tricosta..............._.._....... 5, 6, 25; pi. 5

tumida. ............................... 5, 6, 25

vicksburgensis.......___......... 4, 5, 6, 25; pi. 5

zanzibarica....___._._...__................ 16, 25

(Loxostomum) limbata....._.._...__.. __ 16,25

limbata costulata.._._._.__..__ ..--_ 16,25 

mayori..........______........... 16, 25

porrecta...____..................__.... 16,25

rostra......___........______..__ 6, 25; pi. 5

sp. A-._.._--..-......_...--__-_-.__ 6,25

sp. B__________________ 6, 25; pi. 5 

Bolivinella folium.._----_.____-.---.__ - 16,25

Bolivinopsis cubensis.................. 5, 6, 25; pi. 4

sp_.-_ 6

Page 

Borelispulckrus. -----........ ---.- - 116,25

bosciana, Quinqueloculina............ 14, 30; pi. 17

boueanum, Nonion..............-............. 20,29

bracteata, Asterigerinata......._.............. 4,6,24

bradyana, Flintina.........__.. ...... 16, 27; pi. 17

bradyi, Astacolus....................... 16, 24; pi. 18

Cymbaloporetta........................._. 18,26

Eggerella.............................. 10,11,27

Karreriella..................... 10, 11, 28; pi. 12

Liebusella................................. 14,28

Parrina................................... 16,29

Trifarina.............................. 12,18,32

brevis, Pleurostomella.......... 11,12,30

brevoralis, Cibicides............................ 7,26

Bronnimannia haliotis _....._.......... 18, 25; pi.19

Bulimina aguafrescaensis..... ...-.... 10,11,25

alazanensis.--.--... -- ..---.- 5, 6, 25; pi. 5 

bleeckeri-..-...................... 5, 6, 25; pi. 5

costata.................................... 16,25

ovata....---.........................------ 6,25

semicostata-------------- 2,5,6,25; pis. 1,5

tuxpamensis.........._. .--.. 2,25

wttliamsoniana....... ....._-......._.... 25

sp.. 6,25

Bulimindla grata............._._-... .....- 26

milletti. ........................... 16,25

septate.... 6,10,11,25

Buliminoides williamsoniana......_........... 16,25

buttoides, Pullenia......-. - 7,12,30

Sphaeroidina..... .... .. 12,18,31

byramensis, Angulogerina--- ... 4, 6, 24; pi. 5 

Pararotalia----------- - - 4, 5, 6, 29; pi. 7

caduca, Spiroloculina................. ...... 14,31

Calcarina spengleri....... - --- -- 13,18,25

californica, Amphimorphina.. ...__---.---- 4,6,23

californicus, Astacolus..._...--------------- 16,24

calomorpha, Nodosaria . - 16, 28; pi. 18 

canariensis, Qloborotalia........ ... -- U

Cancris sagra..... 18, 25; pi. 19

Candeina nitida-.-------------- 12, 20, 33; pi. 14

carandetti, Cassidulina -------- 10,12, 25; pi. 13

carapitana, Cassidulina-...---......- 10,12,25

carinatus, Cibicides------------- - - 7, 26; pi. 7

carpenteri, Cycloclypeus -- 16, 26; pi. 17 

Carpenteria hamiUonensis.. - --------- 3,25

proteiformis. . - .__.. -- -- 20,25 

Carterina spiculotesta-...._.. -...._ 16,25

Cassidulina angulosa..------- .._ 12, 25; pi. 13

carandetti--------- - --- 10, 12, 25; pi. 13

carapitana----- -- - 10,12,25

chipolensis-------------------------------- &

delicata-------------------- 12, 18, 25; pi. 18

minuta - -- ---- 12, 18, 25; pi. 18

pacifica --- - 12, 25; pi. 13 

sagamiensis -- 10, 12, 25; pi. 13 

subglobosa- -- 7, 12, 18, 25; pi. 13 

subtumida 12- 2B

tricamerata--- - -------- 7, 25; pi. 7

sp. A 7,25

sp. B. 7- 26

sp. C. 7' 26

sp. D.._ 7- 26

sp. E _ - - 10,12,25

sp. 10,12,25

137
138 INDEX

Page 

Cassigerinetta. .. ._ ____..._..____. 14,5

chipolensis.... ______...__ 3, 4, 7, 33; pi. 8

catenulata, Entosolenia squamosa.._. ___.... 29

Oolina squamota.......................... 6,29

Caucasina grata.........____..... 5, 6, 26; pi. 4

ceZso, Discorbis........ ___________.. 28

Neoconorbina.. __...________.. 6,28

centralis, Globorotalia.._.._._.. ..__ 1, 3, 4, 33; pi. 3

Chilo quembelina cubensis____-..._ 3, 7, 33; pi. 8 

chilostoma, Karreriella. ...__.___ ___ 6,28

Chilostomella cyclostoma... .__.__.... 5, 7, 26; pi. 6

chipolensis, Cassidulina..-.-... .__....__. 5

Cassigerinella.............. _____ 3, 4, 7, 33; pi. 8

choctawensis, Bolivina.-..-.......___....... 2,5,24

Chrysalidinella earlandi....................... 16,26

Chrysalogonium ciperense......-..__ ____.__ 5,6,26

lanceolum........_.______._.______ 5, 6, 26; pi. 4

longicostatum......... _____________ 2,5,6,26

tenuicostatum...._.._....._.__.._ ______ 5,6,26

sp._---_ _-.____.___._.____________.___ 6,26

Cibicidella variabilis.._.____. ____.______ 20,26

Cibicides brevoralis...............__........ ... 7,26

carinatus. ________________ 7, 26; pi. 7

cicatricosus...._........................ 12,20,26

danvillensis.-__._.............._____. 2f.

floridanus... _____________________ 3, 7, 26

havanensis.._._._............. 2, 3, 5, 7, 26; pi. 7

lobatulus............................. 7,12,20,26

macrocephalus.-.--.._..__....._._....... 2, 3, 26

mayori..._....__ _.________________. 20,26

praecursorius................_....___ 7, 26; pi.7

pseudoungerianus.-..-..___._.. ..___ 7,20,26

tuxpamensis..............__. __________ 2,3,26

Cibicidina danvillensis....._._....__._._. __.. 7,26

cicatricosus, Cibicides....._......__......... 12,20,26

ciervoensis, Eponides duprei...._..__._. 5, 6, 27; pi. 6

ciperense, Chrysalogonium...._._. _______ 5,6,26

circulum, Fissurina-... _____________ 11, 27; pi. 12

clara, Spiroloculina...__._._.____.__._ __._ 14,31

Clavulina difformis....___.....____...__ 14, 26; pi. 17

clericii, Rohulus.-._.._ _______________ 6,30

colei, Virgulina.---...__._.... _____________ 5,6,32

communis, Dentalina-._._._______.___. 11, 26; pi. 12

Nodosaria (Dentalina) ______________ 26

Spiroloculina...-.__ ____________________ 14,31

compacta, Bolieina ________________ 16,24 

concentrica, Mississippina.... _____________-. 31

Stomatorbina....__..____._.._._.__. 18, 31; pi. 19

concinna, Rosalina.______.__._. _______________ 18,30

concinnus, Tretomphalus...................... 18,32

conglobatus, Olobigerinoides..... _..._ 12, 20, 33; pi. 14

conglomerata, Globigerina--. 3, 7,11,12,33; pis. 2,8,14 

conica, Alabamina...... ........_.. 2, 4, 6, 23; pi. 6

TerteZorio-............................... 14,32

Conicospirillina semiinvoluta..__.............. 18,26

consobrina, Dentalina......__...___._...._.. 28

Nodosaria.......... __.______________ 6, 28

cooperensis, Angulogerina________. 4,6,24; pi. 5

Dentalina..... ________________ 6, 26

Cornuspira planorbis........... ___...____ 16,26

coronata, Anomalina. ..___________.__ 20,24; pi. 19

costata, Bulimina. _____________________ 16,25

Marginulina... _______________________ 16,28

costulata, Bolivina (Lcxostomum) limbata.-.-- 16,25 

costulatum, Loxostoma limbatum....______..__ 25

crassa subcuneata, Quinqueloculina-.--___ _____ 30

crispum, Elphidium.... ____________________ 18,27

Cristellaria rotula. ________________________ 30

crustata, Neoconorbina...______________ 18, 28; pi. 18

cubensis, Bolivinopsis__...... __________ 5, 6, 25; pi. 4

Chiloguembelina____.___.. _________ 3, 7, 33; pi. 8

Cycloloculina--. __________________ 5, 6, 26; pi. 7

Pleurostomella.--.._._________.. 2, 5, 6, 30; pi. 4

alazanensis-.----____ _____________ 30

Spiroplectoides---.-..__._._.._._.___...... 25

culter, Osangularia.. _______ 2, 6, 10, 11, 12, 29; pi. 13

curvatura, Ellipsonodosaria____________--_. 31

Stilostomdla._._.__._._._..._.__.._.. 6, 31; pi. 4 

Cycloclypeus carpenteri.....__._....._.. 16, 26; pi. 17

Cycloloculina cubensis---.-.-__.__ 5, 6, 26; pi. 7

Page 

cyclostoma, Chilostomella...____ ____ 15, 7, 26; pi. 6

Cymbalopordla tabellaeformis.................. 18,26

Cymbaloporetta bradyi....... ...__________ 18, 26

squammosa. _________________-__. 18,26

D

danvillensis, Cibicides..------... ______-------_ 26

Cibicidina.....-----.- .................. 7,26

Globigerina... -..----------_-- 3, 4, 7, 33; pi. 9

Globigerinetta ._....._._.___.__ 3, 4, 7, 33; pi. 8

Nonion........................______ 3,33

Darbyella sp__ 16, 26; pi. 18

davidiana, Valvulina.........______.._ 14,32

decorata, Spirillma...... . ..... .... 18,31

dehiscent, Sphaeroidinetta...._....._..... 9,12,20,34

delicata, Cassidulina................ 12, 18, 25; pi. 18

Dentalina communis.-.---------------- 11, 26; pi. 12

consobrina.... _._ _-_ _ - 28

cooperensis..... ______. .... 6,26

mucronata......._.. .-__ 16, 26

tauricornis-........................... 10,11,26

sp. A...._____._._._.______-----_ 11, 26; pi. 12

sp. B_ .-.- -- 6,26

sp. C_. _- - - 6,26

sp. D_.. -. - 6,27

spp - 2,11,27

(Dentalina) communis, Nodosaria......_.._-.. 26

denticulata, Pyrgo..... __.._ _. .. 16,30

striolata, Pyrgo... --- - 16,30 

denticulogranulata, Spirillina. _ __ _ . 18,31 

difformis, Clavulina- ---------------- 14, 26; pi. 17

Dimorphina striata... ___.---_-__-- _ 31 

Discorbina praecursoria ______ ------ 26

rarescens.... ______--__-------- .. 29

tabernacularis.-.--------- ~~ - 28

Wrightii.-. ............................ 31

Discorbis balcombensis.------------------------ 6,27

celsa.. ._ . - .................... 28

fulva.....- ............................ 28

tuberculata australiensis.-..-... ... 32 

disjuncta, Sphaeroidinetta- _________ 7,9,12, 34; pi. 15

dissimilis, Globigerina 3, 7, 33; pi. 8

distorqueata, Quinqueloculina.._.__ __... 14,30

divaricata advena, Nubeculina........... 14, 29; pi. 17

Nubeculina.......... ____ - 14,29

diversa, Hauerina.----------- .......------ - 14,28

dubia, Pegidia.......................... 18, 29; pi. 19

dupla, Textularia...__---------.----------- 14,32

duprei ciervoensis, Eponides........ ___. 5, 6, 27; pi. 6

durrandi, Massilina.. __________ __.. - 14, 28

Miliolina.________- .................... 28

E

earlandi, Chrysalidinella.........-.--.. ___- - 16,26

TrUoculina.......- . - - 14,32

echinatus, Siphoninoides....... -- -- 18,31

Eggerella firadi/L.------------------------- 10,11, 27

subovalis........... ...... .---_.. 10

eggeri Globigerina__....---------- _.. -- - 20,33

Ehrenbergina albatrossi... - ---- 12, 27; pi. 15

elegans, Epistomina..-------------------- --- 28

Hoeglundina......................._ -- 20,28

Ellipsoglandulina labiata .-____ _ __ 2, 5, 6,27

Ellipsonodosaria adelinensis. _--_-.------------ 31

curvatura..--. ___. .. -- -- 31 

nuttalli............................. 31

recta.----------.-.-------.---.------------ 31

subspinosa.-...... _ __.- -- 31

Ellipsopleurostomella stewarti..... -... -- 27

sp. .. 12, 27; pi. 12

ellipticus, Peneroplis-.-------- ...-- -- --- 16,29

elongatus, Olobigerinoides---.-----.-.---.------ 20,33

Elphidium advenum...------------------------ 18,27

crispum.-... ------- ------ -____ 18,27

hyalocostatum. ................. 18, 27; pi. 18

jenseni...... __.--._ -- 18, 27

simplex.... _-___ -- --------- 18,27

Elphidium advenum Continued Page 

striatopunctatum....................__. 118, 27

sp_ 6,12,27

Enantiomorphina sp_ ____-_.________ 6,27

Entosolenia marginata lagenoides.-._.-.._... 27

squamosa catenulata.._. ..._______.. 29

Epistomaroides polystomelloides............... 18, 27

Epistomina elegans--------.................. _ 28

Epistominella obtusa..... ________....___. 18,27

rugosa..... _______._________ 18,27

tubulifera................................. 18, 27

Eponides duprei ciervoensis.---------. 5, 6, 27; pi. 6

kiliani......... 5,6,27

ocalanus--. ....------__--_______ 2,27

repandus.-.--.................... _ 18, 27; pi. 19

umbonatus.-..--..-.-.------------..-..... 11

sp_______._____________- 6, 27; pi. 6 

equisetiformis, Nodosaria..-----... .. 10, 11, 29; pi. 12

exigua, Planispirina---........ .__-_------ 29

Planispirinella...------... __ -. 16, 29

eximia, Spiroloculina.._._._ __---_.____.. _ 14,31

'ia, Bolivina..__................... 4, 6,24; pi. 5

ferussaci, Quinqueloculina.._..__... _.. ----- 14,30

fijimsis, Qloborotalia menardii---- 7, 10,12,33; pi. 15

Orthomorphina..-.----.... 11, 12,29; pi. 12

Siphonodosaria... _______. ..---_ 11, 29

fimbriata, Fissurina._..______........__.. 6, 27; pi. 4

Lagena... ______ .- --- 27

Fissurina alveolata.... __. ___ -__ - 11,27

circulum..------..------.---.----- 11, 27; pi. 12

fimbriata... ...................... 6,27; pi. 4

formosa--- 11, 27; pi. 12

globosa-. . 11, 27

lagenoides..----------.-------------------- 6,27

spp.------ ... ----- __ .---- 6,27

flexuosa, Globorotalia tumida.-..- 9, 10,12,33; pi. 16 

flintiana, Miliolinella oceanica...... ... -------- 14,28

Triloculina oceanica ------.....-. _._.---- 28

Flintina bradyana...................... 16, 27; pi. 17

floridana, Rosalina..-------------------------- 18, 30

Truncatulina.......... _. ... .__-- 26

floridanus, Cibicides.---------- -------- 3,7,26

floscula, Neorotalia.-.................--------- 2,28

Rotalia... 28

fohsi robusta, Globorotalia...- 9, 10,12,33; pi. 16 

foliacea oceanica, Textularia......._..---...--- 14, 32

Textularia............___----- 14,32

folium, Bolivinetta- _......-- .------- 16,25

Spiroloculina...------- ... - _-- 14, 31

formosa, Fissurina. ... ___ - 11, 27; pi. 12

Lagena.- __-_- - - ------- 27

foveotota, Spiroloculina---------- ...----------- 14,31

frondescens, Sagenina....- __--.__ 14, 31; pi. 17

Frondicularia robusta repanda.--------- 16, 27; pi. 18

fulva, Discorbis ---- -------------- 28

Neoconorbina-..------------------------'- 18, 28

O

gardnerae, Bolivina...- ... - 4,6,24

Gaudryina triangularis angulata..-....-------- 14, 27

trullissata...--------------------------- 14,27

(Siphogaudryina) rugulosa...-...... - 14,27

siphonifera... __ -- - 14,27

transversaria.. ___-.- --------- 14, 28

Gavelinopsis praegeri- ___ - - 18,28 

gibbera, Lagena...- ------------------------ 29

Oolina - 6, 29; pi. 4

girardana, Gyroidina-------- ---------- 6, 28; pi. 6

Rotalina. _ - - -- 28 

glabra, Marginulina _._ - _ - 6,28

glabrata, Anomalina.----.-------------------- 20,24

Glandulina labiata,..-- ------------------- 27

Globigerapsis index..---------------- 1, 3,4, 33; pi. 2

Globigerina ampliapertura......----- 3, 4, 7, 33; pi. 8

ampliapertura zone-. ------ ----- 3

apertura ........ 12, 33; pi. 14

bilobata.........-------------------- -- 34
INDEX 139

Globigerina Continued Page 

conglomerate........ 13, 7, 11, 12, 33; pis. 2, 8, 14

danvillensis....-----__...__ 3, 4, 7, 33; pi. 9

dissimilis_______-_.__._.____ 3, 7, 33; pi. 8

eggeri.-.-- . . .... 20,33

gortanii... ________________ 2, 3, 4, 7, 33; pis. 2, 10

hexagona... ________________ 12, 33; pi. 14

increbescens............ _________ 3, 7, 33; pi. 11

inflata.--... ____ __....______ 11

nepenthes...-. 7, 9, 10, 12, 13, 20, 21, 22, 33; pi. 14 

nepenthes zone.-___-________________ 23

oligocaenica.------------------------------ 33

opima nana________________________ 3, 7, 33; pi. 9

opima zone.-..-_____-_-______-._- 3

ouachitaensis se«jfe-____________.-______-_ 33

pera________________._ 2, 3, 33; pi. 2

sellii.-.------------------------- 3, 7, 33; pi. 10

zone..--.-----_________-_______- 3,4

seminulina.. __ ______ ____..______ 34

senilis_ -__________ ____ 3, 7, 33; pi. 11 

spinuloinflata.. ___----._____________ 33

suteri- ._____________.-__ 3, 7, 33; pi. 9 

tripartitatapuriensis-- __--_____. 3, 7, 33; pi. 11

turritilina.-. _-____-______-.---_____-..____ 33

venezuelana.--.--- _______________ 2,3,4,11

yeguaensis--- ____________ 2, 3, 4, 7, 33; pis. 2, 8

Globigerinatella insueta zone_____-.-_____ 23

insueta/Globigerinoides bispherica subzone.- 23 

Globigerinella aequilateralis.... __.____ 12,20,33

danvillensis---- ____________ 3,4,7, 33; pi. 8

Globigerinita glutinata.. ___........_______ 12,20,33

Globigerinoides conglobatus _ _______ 12,20, 33; pi. 14

elongatus- ______ ______________ 20,33

index....--- _______-_____________. 33

ruber...- ______________.____._ 20,33

sacculifer.---------------------- 12,20, 33; pi. 14

trilobus.. -----_____ ______.-..._ 7,12, 33; pi. 11

Globoquadrina altispira _ _ _ _ _ 7,9,12, 33; pi. 14

Globorotalia canariensis...-.... ___________ 11

centralis-.- ......___ ____ 1,3,4, 33; pi. 3

fohsirobusta..-... ______.__ 9,10,12, 33; pi. 16

hirsute,--------..---------- 11,12,20, 33; pi. 16

mayeri... _-_______-____-__._________ 20

zone...- -. ...__.._.__-.___. 13,20,21

/ Globigerina nepenthes subzone..___._- 9

menardii... ___........______ 9,10,13,20,33

ftjiensis-------------.-..-- 7, 10,12, 33; pi. 15

ungulata.. . .___ 10,12, 33; pi. 16 

zone--_-_ ---------____--__..--_-__ 13,20,21

menardii/Globigerina nepenthes zone... 9

tumida transition form.. 7,9,10,12, 33; pi. 16

opima nana... ___________.____._ 33

opima zone...____.______ 3

spinuloinflata----. ............ 2,3, 33; pi. 3

spinulosa. -. . ..._......... 2,3, 33; pi. 3

tumida --- - __ 10,12, 20, 33; pi. 16 

flezuosa... ........... 9,10,12, 33; pi. 16

wilcozensis - -. ...__...... 2,3, 34; pi. 3

Globorotaloides suteri-- ______......... 33

globosa, Fissurina.. ---------________________ n 27

globula, Biloculinetta_..__________ 16, 24; pi. 17

Gypsina.- -- -- ___ ________ 3,20,28

glutinata, Globigerinita.- _____________._ 12,20,33

gortanii, Globigerina _____ 2, 3, 4, 7, 33; pis. 2,10 

gracilis, Lagena. ......._.__._._______ 11,28

granosa, Anomalina.... .______._ 4, 7, 24; pis. 6 7

grata, Buliminella__ ____________._______ ' 26

Caucasina... ______.-___.-__-__-_ 5,6, 26; pi. 4

Gypsina globula.____________---.____... 3 20 28

vesicularis ________________________ 20,28

Gyroidina girardana.-.--.- _________ 6, 28; pi. 6

lamarckiana.--__- _____________ 6,11,12 28

nttidula____________________ 2,6,28

soldanii________________ n 12 28

Spp ________ .---__-___.--_______________' 'n

H

hadai, Spiroloculina_________________ 14,31

Haddonia torresiensis .-_-__---_.______.- ___ 15 28

haliotis, Bronnimannia....... _____ 18,25; pi. 19

Halkyardia bikiniensis.......___.._.. 13,5,6,28

hamtitonensis, Carpenteria.-.-- ___________ 3,26

hantkeniana, Bolivina-. ___________ 16, 24; pi. 18

Hantkenina... ._._....______._-________-__- 1,3,4

alabamensis-.... __-______ __________ 1,3,34

inflata.----- ------------ 1, 3, 4, 7, 34; pis. 1, 8

Hastigerina pelagica_________________ 12, 34; pi. 15

Hauerina diversa..-.. ________.._...... 14,28

involuta... ____________________ 14,28

muletti ---___--___-____._____.__________ 14,28

pad flea.------------ ___-___________ 14,28

havanensis, Cibicides...._____ 2, 3, 5, 7, 26; pi. 7

Heterostegina suborbicularis.__..._____.---.- 16,28 

hexagona, Globigerina_ .____._____ 12, 33; pi. 14

hirsuta, Globorotalia.---------_ 11, 12, 20, 33; pi. 16

hispida, Uvigerina.__..______________ 10

Hoeglundina elegans..-.... ..___________ 20,28

Homotrema rubrum___________.--__. 20,28

hyalocostatum, Elphidium.... ..._-___ 18, 27; pi. 18

I

incisura, Triloculina... ___... ----------- 14,32

increbescens, Globigerina....--... ._--_ 3, 7, 33; pi. 11

index, Globigerapsis.... ________ 1, 3, 4, 33; pi. 2

Globigerinoides__________- __ 33 

inflata, Globigerina-- .______-_.--_---________ 11

Hantkenina...-.--- ____ 1, 3, 4, 7, 34; pis. 1,8 

inhaerens, Acervulina..-------------- .. 20,23

insecta, Nodosaria...-------------------------- 11,29

involuta, Hauerina----- _.. - .-_--_- 14,28

Triloculina...------------... ....____---__ 14,32

irregularis, Triloculina------------ .__ - 14,32

japonicum, Nonion. _________________ _._ 20,29

jenseni, Elphidium...... ____________ _...- 18,27

Karrerietta bradyi.. ... 10, 11, 28; pi. 12

chtiostoma....----------------- ________ 6,28

siphonella__...._._____________________ 10

sp..._ - 6,28

kerimbaensis, Textularia - ___ 14,32 

kerimbatica, Trilocvlina..- .. _.__ 14,32 

kttiani, Eponides...----- ___-._ .---__-__- 5,6,27 

Pulvinulina____....___._-_____--- 27 

kochi, Sphaeroidinella - - 7, 9, 12, 34; pi. 15

labiata, EllipsoglanduHna.-- -------------- 2,5,6,27

Glandulina...__--____-_.__ 27 

Polymorphina....-- -..___... -- 30

Pyrulina.... - 10,11,30

labiosa, MUiolineUa. . . 14,28

Triloculinella.-------------------------- 28

Lagena alveolata. __________-_-------_______--_ 27

fimbriata... -------------------------- 27

formosa.-----.---------------------------- 27

gibbera..--------------------------------- 29

gracilis--. ______ .-.__ _ 11,28

lagenoides, Entosolenia marginata. .-__._____. 27

Fissurina.-. ______._.____ __ ___- 6,27

Lagenonodosaria scalaris.- _--_.________ 16,28

lamarckiana, Gyroidina.----------------- 6,11,12,28

Quinqueloculina----. ___._____- 11,14,30

Lamarckina torrei_____.._.___..-_-- 31 

lanceolum, Chrysalogonium -__._-.-____ 5, 6, 26; pi. 4

larvata, Planorbulinella. ............... 7,20,29

Laticarinina pauperata........ _______-_- 12,28

Lepidocyclina.-------------------------------- 7

lessonii, Amphistegina-.. __________ 18,23,24

Liebusella bradyi__-... _______._____ 14,28

limbata, Bolivina (Loxostomum) __-______- 16,25

costulata, Bolivina (Loxostomum)... ____- 16,25 

limbatum costulatum, Loxostoma-- __________ 25

limbosus, Robidus.. . .____._.______ 16,30

Page

lobatulus, Cibicides-- .-- -.-. 17,12,20,26 

longicostatum, Chrysalogonium-.----- __- 2,5,6,26

longiscata, Nodosaria..... ________.__ 6,29

Loxostoma limbatum costulatum - _ __ _ _.-_ 25

mayori-.--. ____.__-____--_-_____-_._- 25

porrectum -_--__________...___ 25

rostrum.-------.--- __________._____ 25

(Loxostomum) limbata, Bolivina------------_ 16,25

limbata costulata, Bolivina- ______________ 16,25

mayori, Bolivina.......______._. 16,25

porrecta, Bolivina..- _________-__ 16,25 

ros.ro, Bolivina--- ______________ 6, 25; pi. 5

M

macrocephalus, Cibicides................ .__ 2,3,26

maculosa, Anomalina. ______________.___ 20, 24

madagascariensis, Amphistegina. _......... 13,18,23

maorica, Rosalina..... .. .._.__. 29

maoricum, Nonion------------------- 3, 5,6,29; pi. 6

marginalis, Sorites.-..--...... _-_---_-____ 16,31

marginata lagenoides, Entosolenia.............. 27

Marginopora vertebralis.... .. .__-__ 13,16,28

Marginulina costata...-- __.___________ 16,28

glabra-...____ ....._.._____ 6,28

sublituus multicamerata. ___ --______ 32

marshaUana, Asterigerina.--..-_____... 2,6,24 

Spiroloculina... _._.__ 14,31 

Triloculina... _.-____-__________-__-_.____ 14,32

martii, Valvulina..--. ----------__.___ 2,32

Massilina alveoliniformis------- ________ 23

durrandi_______-_-__________ 14,28 

secans-.------------------------------ 14,28

reticulata.. _-. _______ 14,28

mayeri, Globorotalia. _______ ____ 20

mayori, Bolivina (Loxostomum) -....____.. 16, 25

Cibicides_____._______.__.__ 20,26 

Loxostoma.-.-- _. --__.__ 25 

RotaJiammina...---- . _______ _ 16,31

menardii fijiensis, Globoroialia___ 7,10,12,33; pi. 15 

Globorotalia .................... 9,10,13,20,33

ungulata, Globorotalia.-....----- 10,12,33; pi. 16

menardii-tumida transition form, Globorotalia.. 7,

9,10,12,33; pi. 16

mera, Bolivina plicatella.__.___._ ____ 5,6,24; pi. 5

micens, Rosalina ____ _ -_______- ... 18,31

micrum, Nonion... ------- -____.____ ... 5,6,29

MUiolina durrandi---.- _ _ __ 28 

secans.------ - -_-___ . 28

MiliolineUaaustralK---.-------------------- 14,28

labiosa - ___ - _ 14,28

oceanica...- ______ 14,28

flintiana.-------------- -_._ -___ 14,28

milletti, Buliminella..------------------------ 16,25

Hauerina-------------- ------------------- 14, 28

minuta, Cassidulina - -----. 12,18, 25; pi. 18

minutissima, Bolivina.......----- _--_ 4, 6, 24; pi. 5

Nonionella.---.-------------------------- 6,29

mira, Rotorbinella.------------------ 18,31; pi. 18

Mississippina concentrica... ____-_-_---_ 31

mucronata, Dentalina.....- ___ _-______. 16,26

multicamerata, Marginulina sublUuus.. - - 32 

Vaginulinopsis sublituus. ______ 5,6,32; pi. 4

murrhina, Biloculina__ _-__ ---------- 30

Pyrgo- 11,30

N

nana, Globigerina opima .... __ 3,7,33; pi. 9

Globorotalia opima- ------- ------- -- 33

naranjoensis, Pleuroslomella .._-...--.--- 5,6,30 

Neoconorbina celsa,. -__--__-------_-------- 6,28

criutata.. 18,28; pi. 18

fulva 18,28

patettiformis-. - - - ------------ - 18,28

tabernacularis.--------- ------------------- 18,28

terquemi.------------------------ -- 18,28

tuberocapitata----- - ---- -- 18,28

Neorotaliafloscula------------- - ----- 2,28

neostriatula, Quinqueloculina - _ _- 14,30
140 INDEX

Page

nepenthts, Globigerina.... _- -_ 17, 

9,10,12,13,20,21,22,33; pi. 14

nicobarensis, Vulvulina..... ______. ____ 10

nitida, Bolivina........--______ ---__ 11,24

Candeina........ __________ 12,20,33; pi. 14

nitidula, Gyroidina....... _._________. 2,6,28

Rotalia...... _ ________________ 28

Nodogenerina roftri -------------------------- 29

Nodosarella acra............................ 6,27,28

robusta........ ........_......_._.... 5,6,28

subcylindrica... _____________....____- 5,6, 28

Nodosaria affinis...-_---------.-_.___------.._ 2,28

calomorpha..... __________ 16, 28; pi. 18

consobrina. ......_____.._.__._ 6,28

equisetiformis__________ 10, 11, 29; pi. 12 

insecta.......____.....___------- 11,29

longiscata________....__.___ 6,29

perversa.......... ...................._.. 29

skobina.-......____-------_..._ 10,11,29

tauricornis................................ 26

tosta. .................................. 6,29

vertebralis______. -.-...._-.-.._- 6,29

(Dentalina) communis....-......_._.. 26

Nonion boueanum....---...._.............. 20,29

danvillensis............................... 3,33

japonicum.......____.________ 20,29

maoricum........... ______ 3, 5, 6, 29; pi. 6

micrum.................. __..._..__ 5,6,29

paciflcum............ _--____._--__...... 20,29

pompilioides-............................. 12,29

Nonionella minutissima...... .__._--_______. 6,29

translucens................ .____.____-__.. 23

sp...................................... 7,12,29

novozealandicum, Astrononion......... 12, 24; pi. 12

Nubeculina dimricata......................... 14,29

divaricataadvena-.-------... ____. 14, 29; pi. 17

nuttalli, Ellipsonodosaria...... __.___._.... 31

StilostomeUa........ ........____... 2,6,31

Nuttallides trumpyi.... .__..._... 2, 29; pi. 1

O

obliquiloculata, Pulleniatina.-... 11, 12, 20, 34; pi. 14 

oblonga, Triloculina................. .......... 14,32

obtusa, Epistominella. ..................... _ 18,27

ocalanus, Eponides..............-------------- 2,27

oceanica flintiana, MUiolineUa... ________-- 14,28

flintiana, TrUoculina..... ._______..... 28

Miliolinetta..............._________ 14,28

Textularia joliacea..... .--.-....._......... 14,32

Triloculina....... ......._..._._...... 28

oligecaenica, Bolivina. ..------...... 4, 6, 24: pi. 5

Globigerina....----... .._............... 33

Oolina gibbera___________.__ 6, 29; pi. 4

squamosa catenulata........ ............... 6,29

Operculina ammonoides........ .-___-___.... 16,29

opima nana, Globigerina... -______-- 3, 7, 33; pi. 9

nana, Globorotalia.... ..------....-....._ 33

orbicularis, Robulus....... ..._.__ 16, 30; pi. 18

Orbulina bUobata...... ._..._._____ 7,12,34

suturalis.....-----.----- . 7, 12, 13, 34; pi. 15

universa....------...-----............. 12,20,34

Oridorsalis umbonatus.-----. 2, 6,11, 12, 29; pis. 6,13

Orthomorphinafijiensis.------------- 11,12, 29; pi. 12

parvula....................... 2, 6, 12, 29; pi. 12

perversa...____. ..._..... 11, 12, 29; pi. 12

rohri......- ----------.-.-.-.-.-.--...... 2, 29

Osangularia bengalensis...-_-______-_-______-- 11

cuUer.- ............. 2, 6,10,11,12, 29; pi. 13

ouachit.aensissenilis. Globigerina............... 33

ovata, Bulimina............................... 6, 25

paciflca, Articulina..... .------_.-............. 14,24

Cassidulina. .--.-.----............ 12, 25; pi. 13

Hauerina.... .____-_____._-__.-_________ 14, 28

Polymorphinella.......--................. 16,30

paciflcum, Nonion............................ W,W

papillata, Sphaeridia. _____........_-_ 18,31

papttlosa, Amphistegina radiata____.... __ 18,23

Pararotalia byramensis........... __-__ 4, 5,6, 29; pi. 7

Page 

parkeri, Quinqueloculina..................... 114,30

Parrina bradyi........... _.-_.-___.________- 16,29

parva, Baggina..... _..--_--__-_----.- _.___ 4,6,24

parvula, Orthomorphina... _____ 2, 6,12, 29; pi. 12 

patelliformis, Neoconorbina-.------------------ 18,28

Patellinaadvenaaltiformis..------------------ 18,29

paula, Bolivina...----------------.----------- 6, 24

Paumotua terebra.......... _---_-_.-.--------- 18, 29

pauperata, Laticarinina.....------------------ 12,28

Pegidia dubia....................... 18, 29; pi. 19

pelagica, Hastigerina....... ___________ 12, 34; pi. 15

Peneroplis ettipticus........................... 16,29

proteus...............----................ 16,29

pera, Globigerina......................- 2,3,33; pi. 2

perversa, Nodosaria..............-----......... 29

Orthomorphina.................. 11,12, 29; pi. 12

Placopsilinasp........ ..._______ 16, 29; pi. 17

Planispirinaezigua.----------------... ------- 29

Planispirinetta exigua......--..........------- 16,29

Planodiscorbis rarescens......-.-...----------- 18,29

planorbis, Cornuspira......................... 16,26

Planorbulina acervalis...--. .-_.. 20,29 

Planorbulinellalarvata..-..............-...- 7,20,29

Planorbulinoides retinaculatus............. - ... 20,29

planulatus,Astacolus................... 16, 24; pi. 18

Planulina wuellerstorft...................... 7,12,29

planus, Tretomphalus.--...................... 18,32

Pleurostomella alazanensis cubensis............ 30

alternans....................... 11, 12, 29; pi. 12

bierigi ................................. 5,6,30

brevii.................................. 11,12,30

cuberutt................ . . 2, 5, 6, 30; pi. 4

naranjoensis............................. 5,6,30

vicksburgensis.-..------------------------- 25

sp__________ _________ 6, 30; pi. 4

plicatella mera, Bolwina............... 5, 6, 24; pi. 5

poeyana, Quinqueloculina.............. 14,30; pi. 17

polygona, Qvinqueloculina............ 14,30

Polymorphina labiata......................... 30

Polymorphinetta paciftca............-...-..... 16,30

polystomettoides, Epistomaroides............... 18,27

pompilioides, Nonion............ .....------ 12,29

porrecta, Bolivina (Loxostomum) .._- ----- 16,25

Uvigerina........--------...-.-.---------- 18,32

porrectum, Lozostoma....... ..._--------- 25

praecursoria, Discorbina..........---------- 26

praecursorius, Cibicides................... 7, 26; pi. 7

praegeri, Gavelinopsis................-...--.-. 18,28

proboscidea, Uvigerina...............------- 10,12,32

vadescens, Uvigerina........-........... 12,18,32

proteiformis, Carpentaria.... _ __...-------. 20,25

Proteonina....................... ...---------- 31

sp... ........... ... . - 31

proteus, Peneroplis.... ............- 16,29

Pseudoparrella rugosa..........--- ...--------- 27

pseudopygmaea, Bolivina...................... 16,24

pseudoungeriana, Truncatulina................ 26

pseudoungerianus, Cibicides............ 7,12,20,26

pulchra, Reussella....... -------- 16, 30; pi. 18

pulchrus, Borelis...............------. 16,25

Pulkniabuttoides. -- ----- ---- 7,12,30

sp_ - - 7,12,30 

Pulleniatina obliquiloculata..- - 11, 12, 20, 34; pi. 14 

Pulvinulina ktiiani....------------------------ 27

Pulvinulinella bengalensis..............------- 10

pusilla, Bolivina........................... 10,11,24

pusUlum, Astrononion...--.--... - ---- 7, 24; pi. 6

Pyrgo denticulata......... __-_-- .---___-__ 16,30

denticulata striolata. .------ ......- - 16,30

murrhina--------------------------------- 11,30

sp. ........ _... --_- 2,6,30

Pyrulina labiata................. ... ... 10,11,30

Quinqueloculina agglutinans....-------- 14, 30; pi. 17

anguina arenata....------------------ __ 14,30

apicula..-.... _.__-_____-_---------- 14,30

berthelotiana.............................. 14,30

 _.---. ------------ 14,30

Quinqueloculin a Continued

114, 30;

crassa subcuneata.

ferussaci... ... --------------- _ .. _ _ ..

lamarckiana. .. .... .................. 11

neostriatvla- --------------------- _ ......

parkeri-..--- ... ----------- _ _ __ __ .

poeyana..------ ... ........... _ .. 14, 30;

polygona .... _ _ _ _ __.. _ _.._ _ ........

subcuneata ... ____-- _ .-.. _ .. -. 14, 30; 

sulcata ... .----___----_----_ -. - __ 

tubus..... .-. ---------------- ___ -. _ -.

R

Page

pi. 17 

30

14,30 

14,30 

14,30 

14,30 

14,30 

pi. 17 

14,30 

14,30 

14,30 

pi. 17 

14,30 

14,30

radiata, Amphistegina.......... _______ 18,23,24

papillosa, Amphistegina................... 18,23

raphana, Siphogenerina. ..--______-___._.. 18,31

rarescens, Discorbina......----------- _..___ 29

Planodiscorbis--.-.... ._________ 18,29 

recta, Ettipsonodosaria........................ 31

Staostomella....................... 5,6. 31; pi. 4

Rectobolivina bifrons striatula.................. 16,30

Rectoglandulina sp_ _._-------__... 6,30

Reophax. -.-_ ----------__._ 31

repanda, Frondicularia robusta......... 16, 27; pi. 18

repandus, Eponides.. .. ........ 18, 27; pi. 19

reticulata, Massilina secans........ --------- _ 14,28

retinaculatus, Planorbulinoides.......... ...... 20,29

Reussella pulchra...................... 16, 30; pi. 18

simplex................................ 12,16,30

sp. 6,30

revertens, Spirttlina, vivipara............... .... 18,31

rhombdidalis, Bolivina................. 6,16, 24; pi. 5

Robulus clericii............................... 6,30

limbosus.................................. 16,30

orbicularis.............. ...___ 16, 30; pi. 18

rotulus.... .. ..........____ 6,30

vortex...............------................ 16,30

sp. 2,6,11,30

robusta, Bolivina.......... --. ___ -..___ 16,24

Globorotalia fohsi..--.--------- 9,10,12, 33; pi. 16

Nodosarella ............................ 5,6,28

repanda, Frondicularia............. 16, 27; pi. 18

rohri, Nodogenerina................----------- 29

Orthomorphina.....-...-............... ___ 2,29

Rosalina concinna............. .............. 18,30

floridana............ ...________ 18,30

maorica................................... 29

micens.....................-....--.._... 18,31

rugosa................................_... 18,31

wrightii..... .......................__. 6,31

sp.. 2,31

ros.ro, Bolivina (Loxostomum)............ 6, 25; pi. 5

rostrum, Lozostoma......... - - 25

Rotalia floscula............... _______.___ 28

nitidula........... ___-__-____- ... 28

Rotaliammina mayori....------------ --____ 16,31

Rotalina girardana............................ 28

Rotorbinella mira...... ...__.. 18, 31; pi. 18

rotula, Cristellaria ..............-.. _____ 30

rotulus, Robulus........__-----__._... 6,30

ruber, Globigerinoides........-..........------- 20,33

rubrum, Homotrema.......................... 20,28

rugosa, Epistominella..................-...... 18,27

Pseudoparrella...............---.......... 27

.Ro-O-ma..-------------------------------- 18,31

Spiroloculina.... ______ _ 14,31

rugvlosa, Gaudryina (Siphogaudryina)......... 14,27

Saccammina sp.- -- - _____--- __ 14,31

sacculifer, Globigerinoides......------ 12, 20, 33; pi. 14

sagamiensis, Cassidulina............ 10,12, 25; pi. 13

Sageninafrondescens...-.-...... _ 14, 31; pi. 17

sagra, Cancris ............____ 18, 25; pi. 19

Saracenaria sp.-_-_-------------- 6, 31; pi. 4

scalaris, Lagenonodosaria...................... 16,28

Schlumbergerina alveoliniformis......---------- 14,31
INDEX 141

Page 

secans, Massilina--- _______-- ---. 114,28

MUiolina.-...__._______ -_ . - 28

reticulata, Massilina----- _________________ 14,28

sellii, Globigerina .--- -- - 3, 7, 33; pi. 10 

semialata, Textularia. ________ _______ 14,32

semicostata, Bulimina- ______ __ 2, 5, 6, 25; pis. 1, 5

semiinvoluta, ConicospirUlina..... ...... 18,26

seminuMna, Globigerina------ ...______________ 34

Sphaeroidinella ------------ 7, 9,12, 34; pi. 15

seminulum, Quinqueloculina..-- ____ _ 14,30

senilis, Globigerina---------------.--- 3, 7, 33; pi. 11

Globigerina ouachitaensis. _________________ 33

septata, Buliminetta. ------------------ 6,10,11,25

seriata, Siphogenerina-- ..._.__ _________ 5

silvestrina, Bolivina__________._ 10, 11, 24; pi. 12

simplex, Elphidium---------- ___ _ ___._.. 18,27

Reussetta----------._.______-_._._.____ 12,16,30

sinuata, Bolivina_-______--...._____ 11, 24; pi. 12

(Siphogaudryina) rugulosa, Gaudryina.- _____ 14,27

siphonifera, Gaudryina- _______________ 14,27

transversaria, Gaudryina..------ ________ 14,28

Siphogenerina raphana. ___-_-______.__ 18,31

seriata.-- ___. __________________ ___ 5

striata.------. ------ 5, 6, 11, 12, 31; pi. 5

sp. 6,31 

10

14,27 

18,31 

18,31 

11,29 

,11,29 

,12,28 

16,31 

,18,25 

18,31 

,18,31 

9, 10 

,20,34 

pi. 15 

pi. 15 

pi. 15 

,18,24 

16,25 

14,32 

16,24 

,11,33 

33

; pi. 3 

; pi. 3 

_ 18,31 

_ 18,31 

_ 18,31 

. is, 31 

_ 18,31 

_ 16,31 

_ le^si 

_ 14,31 

14,31 

_ 14.31

14,31 

14,31 

14^31 

14 31 

14,31 

14 31 

14.31 

_ 25 

_ 18,26 

_ 29 

_ 6,29 

_ 27 

g, 31 

; pi. 4

2,6,31 

recta- ____________________________ 5, 6) 31; pi. 4

subspinosa,- ... _ _ _ _ _______ _ ______ 2,5,6,31

verneuUi--__---- ____ 2, 6, 11, 12, 31; pis. 4, 12

Stomatorbinaconcentrica-...-- ________ 18, 31; pi. 19

torrei... ________________________ 2, 5, 6, 31; pi. 1

siphonella, Kaneriella ...__ _________.__......__

siphonifera, Gaudryina (Siphogaudryina)...--- 

Siphonina tubulosa. ... ... ... _ __ _ _ ... _

Siphoninoides echinatus . . . . __ . _ __________

Siphonodosaria fljiensis _____ _ _______ _ _

skobina, Nodosaria-- ___ _ _ _ _ _ ____ _ __ 10,

soldanii, Gyroidina----- ___ _ ._ _ _________ 11,

Sorites marginalis.------------ __ ____________

spengleri, Calcarina.. ___ _____ _ _ _ ____ _ 13

Sphaeridia papittata ...__ _____ ____ __________

Sphaeroidina bulloides--------- _ _ _______ 12,

Sphaeroidinella------- ___ __ _ _____ _ _ _

dehiscens .. ___ __________..._ _ _. _ 9,12,

disjuncta... --------- ...__.____ 7,9,12,34;

kochi... --------------------- 7, 9, 12, 34;

seminulina ____________ ____ 7, 9, 12, 34;

sphaerulata, Baculogypsina _ --_-__________ 13,

spiculotesta, Carterina... ____ _. _ _ ____ _ _

spinata, TrUoculina-- _ -____ _ _______ _ ____

spinescens, Bolivina.----- ___ __ _ __________

spinosa, Vulvtilina-. ________ _ __ _ _____ 6,10,

spinuloinflata, Globigerina __ _ ____ _ _ _ ___

Globorotalia ----------------- 2, 3, 33;

spinulosa, Globorotalia ....__ _ _______ 2, 3, 33;

Spirillina decorata __ _---------______________

denticulogranulata ... __ _ ________ _ ____

tuberculatolimbata ... ___ _ __ ___ _ _ __ ___

vivipara.- .. ............

revertens ..._.. _ _ __ -.-.__.________

Spirolina acicularis _ _ _ _ _____ _ ____ _ ______

arietina. . _____._____._

Spiroloculina angulata.. .-----_-_._____ __ ___

caduca..-- ___ .__.._.. _ _____ _ _ _ _

clara... ___________________________________

communis-- ____ _ _ ___ _ ___ _ _ _ _ _

eximia. ---------- ___ _ ___ _ _ ____ _

folium..- 

foveolata.---- ___ ____________ _ _ _ ____ _

hadai.. __________ ____________ _ ____ _

rugosa. .......__..___________

Spiroplectoides cubensis ______ __

squammosa, Cymbaloporetta _ _ 

squamosa catenulata, E-ntosolenia _ 

catenulata, Oolina ... __ __ _

stewarti, Ellipsopleurostomella ....

StUostomella adelinensis. _____ __

Page 

Streblus beccarii- - --. . 118, 31; 32, pi. 19

beccarii tepida________________ 18,32

striata, Dimorphina.-_-._-_ __ __ 31

Siphogenerina.. _____---5,6,11,12,31; pi. 5

Vertebralina-...-------------- __.___-__ 16,32

striatopunctatum, Elphidium.. _ ___.-._. 18,27 

striatula, Bolivina.- ------------------------ 16,25

Rectobolivina bifrons- _______________ 16,30

striolata, Pyrgo denticulata. ... _ _ _ __ _ _ 16,30

subarenaria, Quinqueloculina------ ____ ___ 14,30

subcuneata, Quinqueloculina....__.__ 14,30; pi. 17

Quinqueloculina crassa. _-___________ 30

subcylindrica, Nodosarella. _________.______. 5,6,28

subglobosa, Cassidulina- _____ 7,12,18,25; pi. 13 

subgranulata, TrUoculina.. ..._______ 16,32; pi. 17

sublituus multicamerata, Marginulina. .__--___- 32

multicamerata, Vaginulinopsis._..__ 5,6,32; pi. 4 

suborbicularis, Heterostegina____________ 16,28

subovalis, Eggerella. .._-__ __ ____ .__-- 10

subplanciana, TrUoculina. .___.._____.__._ 16,32

subspinosa, Ellipsonodosaria.----------------- 31

StilostomeUa...-- . - --- - 2,5,6,31 

subtumida, Cassidulina---- ___--_-.___ 12,25

sulcata, Quinqueloculina-------- ____________ 14,30

suteri, Globigerina.-.. _______.__ 3,7,33; pi. 9

Globorotaloides _______________.._.__ 33

suturalis, Orbulina------___. 7,12,13,34; pi. 15

Svratkinaaustraliensis..------ ________ 18,32

tabettaeformis, Cymbaloporella- ______________ 18,26

tabernacularis, Discorbina. _._--.____________ 28

Neoconorbina...-- ____________ 18,28

tapuriensis, Globigerina tripartita___ 3,7,33; pi. 11 

tauricornis, Dentalina.-- _-_____---_._ 10,11,26

Nodosaria_______________.--._______.__ 26

tenuicostatum, Chrysalogonium.---- ____.___ 5,6,26

tepida, Streblus beccarii___________________ 18,32

terebra, Paumotua_______________________._ 18,29

terquemi, Neoconorbina... ______._______ 18,28

terquemiana, TrUoculina------- ______.-_-_ 16,32

Textularia agglutinans-.. _____________ 14,32

alveata.. __________________________________ 14,32

conica.--. ___.______.___________ 14,32

dupla.. .-______._._.-_-_-_-._.____________ 14,32

foliacea. ___________________ 14,32

oceanica.------- _____.__........_ 14,32

kerimbaensis..----- ________-__.__ 14,32

semialata.... _._____-_-_.______. 14,32

torrei, Lamarckina.- ________...__._--.__ 31

Stomatorbina __________-------_ 2,5,6,31; pi. 1

torresiensis, Haddonia.--.- __________________ 16,28

tortuosa, Bolivina-- ____________ 6,16,25

tosta, Nodosaria...._________.__.___ 6,29

totomiensis, Baggina. ___________ 18,24; pi. 19 

translucens,Alliatina--.- __-________---. 20,23

NonioneUa. _..----.____.........._. 23

transversaria, Gaudryina (Siphogaudryina)..... 14,28

transversestriata, TrUoculina. _______-_____. 16,32

Tretomphalus concinnus.. ________--__ 18,32

planus..---------------------------,-.- 18,32

triangularis angulata, Gaudryina-. ____-___ 14,27 

tricamerata, Cassidulina.. _________ 7,25; pi. 7 

iricarinata, TrUoculina_-_..______......... 16,32

tricosta, Bolivina._...__ _ _ __ _ _ _ 5,6,25; pi. 5

Trifarina bradyi. __________________________ 12,18,32

trigonula, TrUoculina.-... ____________- 16,32

trUobus, Globigerinoides...---- _______. 7,12,33; pi. 11

Triloculina bassensis.------------------------- 14,32

bicarinata___________________ 14,32 

earlandi- _________________________________ 14,32

incisura. .__________.___--_ 14,32

involuta,-- _.--.____________ 14,32

irregularis----- _________ _--.______ 14,32

kerimbatica. _.--__________-_______ 14,32

marshattana- ___________________ 14,32

oblonga.. _____________________ 14,32

oceanica-.-------------------. ---------- 28

flintiana________________ 28

spinata.-.-.___._____________.-. 14,32

Triloculina Continued Page 

subgranulata.- _____ __ 116,32; pi. 17 

subplanciana.. __ . _______ 16,32 

terquemiana.. ___ ________ 16,32 

transversestriata-- ---------__ 16,32

tricarinata- ____________ T _____ 16,32

trigonula.. ____ ________ 16,32 

sp. A______________________ 6,32 

sp. B._-------....-.---.. .............. 2,32

Truoculinellalabwsa..------------------- 28

tripartita tapuriensis, Globigerina____ 3,7,33; pi. 11 

truttissata, Gaudryina.-- _--.-.....___ 14,27

trumpyi, Nuttallides. ____..______ 2,29; pi. 1 

Truncatulinafloridana-.-- ______ 26

pseudoungeriana..-- --__-_______ 26

unjeriana.-- ____________.---_____ 26

tuberculata australiensis, Discorbis. ___--._. 32 

tuberculatolimbata, Spirillina --------.... _ ___ 18,31

tuberocapitata, Neoconorbina--... .___.__ 18,28

tubulifera, Epistominella _._____.-.______ 18,27

tubulosa, Siphonina.-. .----__-____________ 18,31

lubus, Quinqueloculina____-__._____ 14,30 

tumida, Bolivina--._______.._-..__ 5,6,25

flexuosa, Globorotalia- _____ 9,10,12,33; pi. 16 

Globorotalia ------------ 10, 12,20,33; pi. 16

turritilina, Globigerina--- _____________ 33 

tuxpamensis, Bulimina. _ ___ ____ 2,25

Cibicides ---- - - - - -- 2,3,26

U

umbonatus, Eponides.-.-- -___ _ __ 11 

Oridorsalis------ __..__._ 2, 6,11,12, 29; pis. 6,13

ungeriana, Truncatulina.. _-_.-_-__________ 26

ungulata, Globorotalia menardii___ 10,12,33; pi. 16 

universa, Orbulina..------------------ _ 12,20,34

Uvigerina ampullacea... __________________ 6,18,32

hispida- ----------------.-----....-----.-- 10

porrecta---------------------------------- 18,32

proboscidea--.----------------------- 10,12,32

vade&cens------ _________________ 12,18,32

V

vadescens, Uvigerinaproboscidea..-- ____ 12,18,32 

Vaginulinopsis sublituus multicamerata. 5, 6,32; pi. 4

sp. ________ _ 2,32

Valvulina davidiana .- __- _-_- 14,32

martii-.- ----------------------- 2,32

Valvulineria sp.______ _______ 2,32

variabUis, CibiddeOa.- . 20,26

venezuelana, Globigerina------ ______ 2,3,4,11

verneutti, Stilostometta.-..-- 2, 6,11, 12, 31; pis. 4,12 

Vertebralina striata....----------------------- 16,32

vertebralis, Marginopora___ -___ . 13,16,28

Nodosaria...._____ -_____-___ 6,29 

vesicularis, Gypsina.--- -_-_---_ _ -___ 20,28 

vicksburgensis, Angulogerina.-. 4, 6,24; pi. 5

Bolivina...-____________ 4, 5,6,25; pi. 5

Pleurostomella.. __.. ________ __ 25

Virgulina colei.. ---------------------- 5,6,32

zetina ------------------------- 5, 6,32; pi. 5

vivipara revertens, SpirUlina.------.- 18,31

Spirittina - - -- -------- 18,31

vortex, Robulus --------------------------- 16,30

Vulvulina nicobarensis--- _ _-_ _ 10

spinosa...--------------------------- 6,10,11,33

W

u-ilcoxensis, Globorotalia _____-__ 2, 3,34; pi. 3 

wttliamsoniana, Bulimina---------- 25

Buliminoides----------------------------- 16,25

Wrightii, Discorbina--.----------------------- 31

wrightii, Rosalina---------------------------- 6,31

wuellerstorfl, Anomalina. _______ _____ __ 29

Planulina-------- __________________ 7,12,29

yeguaensis, Globigerina ------- 2, 3,4,7,33; pis. 2, 8

Z

zanzibarica, Bolivina-.--- ___- _____ ___ 16,25 

zetina, Virgulina___ 5, 6,32; pi. 5

U.S GOVERNMENT PRINTING OFFICE : 1966 O 797-972

PLATES 1-19
PLATE 1

FIGUEE 1. Bulimina semicostata Nuttall (p. I 25).

USNM 642166, X 66; USGS £25817 (Ei 4-1).

2. Hantkenina inflata Howe (p. I 34).

USNM 642176, X 88; USGS f25818 (Jl 2-1); a, side view; b, edge view.

3. Stomdtorbina torrei (Cushman and Bermudez) (p. I 31).

USNM 642175, X 56; USGS f25818 (Jl 2-1); a, dorsal view; b, ventral view; 

c, edge view.

4. Nuttallides trumpyi (Nuttall) (p. I 29).

USNM 642174, X 112; USGS £25818 (Jl 2-1); a, dorsal view; b, ventral view; 

c, edge view.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 1

FORAMINIFERA FROM THE EOCENE OF GUAM
PLATE 2

FIGURES 1, 2. Globigerapsis index (Finlay) (p. I 33).

1. USNM 642170, X 70; USGS £25817 (Ei 4-1); a, dorsal view; b, ventral 

view; c, edge view.

2. USNM 642169, X 56; USGS £25817 (Ei 4-1).

3. Globigerina gortanii (Borsetti) (p. I 33).

USNM 642168, X 70; USGS £25817 (Ei 4-1); a, dorsal view; b, side view.

4. Globigerina pera Todd (p. I 33).

USNM 642167, X 88; USGS £25817 (Ei 4-1).

5. Globigerina conglomerata Schwager (p. I 33).

USNM 642177, X 88; USGS f25818 (Jl 2-1); a, dorsal view; b, ventral 

view; c, edge view.

6. Globigerina yeguaensis Weinzierl and Applin (p. I 33).

USNM 642178, X 88; USGS £25818 (Jl 2-1); a, dorsal view; b, ventral 

view; c, edge view.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 2

PLANKTONIC FORAMINIFERA FROM THE EOCENE OF GUAM
PLATE 3

[a, Dorsal view; b, ventral view; c, edge view]

FIGURE 1. Globorotalia centralis Cushman and Bermudez (p. I 33). 

USNM 642171, X 70; USGS f25817 (Ei 4-1).

2. Globorotalia spinuloinflata (Bandy) (p. I 33).

USNM 642172, X 148; USGS £25817 (Ei 4-1).

3. Globorotalia wilcoxensis Cushman and Ponton (p. I 34). 

USNM 642173, X 93; USGS f258 17 (Ei 4-1).

4. Globorotalia spinulosa Cushman (p. I 33).

USNM 642179, X 112; USGS f25818 (Jl 2-1).
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 3

SPECIES OF GLOBOROTALIA FROM THE EOCENE OF GUAM
PLATE 4

FIGURE 1. Bolivinopsis cubensis (Cushman and Bermudez) (p. I 25). 

USNM 642180, X 112; USGS f25813 (Hi 6-1).

2. Saracenaria sp. (p. I 31).

USNM 642231, X 44; USGS f25814 (Gj 11-1); a, side view; b, edge view.

3. Vaginulinopsis sublituus multicamerata (Cushman and Stainforth) (p. I 32). 

USNM 642237, X 27; USGS f25815 (Gj 13-1).

4. Stilostomdla verneuili (d'Orbigny) (p. I 31).

USNM 642204, X 44; USGS f25813 (Hi 6-1). 

5, 6. Stilostomella curvatura (Cushman) (p. I 31).

5. USNM 642201, X 88; USGS f25813 (Hi 6-1).

6. USNM 642202, X 88; USGS f25813 (Hi 6-1).

7. Chrysalogonium lanceolum Cushman and Jarvis (p. I 26). 

USNM 642181, X 44; USGS f25813 (Hi 6-1).

8. Fissurina fimbriata (Brady) (p. I 27) .

USNM 642240, X 66; USGS f25815 (Gj 13-1); a, front view; b, edge view.

9. Caucasina grata (Parker and Bermudez) (p. I 26).

USNM 642238, X 148; USGS f258l5 (Gj 13-1); a, dorsal view; b, ventral view.

10. Pleurostomella sp. (p. I 30).

USNM 642206, X 88; USGS f25813 (Hi 6-1); a, front view; b, side view.

11. Pleurostomella cubensis Cushman and Bermudez (p. I 30).

USNM 642205, X 56; USGS f25813 (Hi 6-1); a, front view; b, side view.

12. Oolina n. sp. aff. 0. gibbera (Buchner) (p. I 29).

USNM 642239, X 88; USGS f25815 (Gj 13-1); a, side view; b, top view.

13. Stilostomella recta (Palmer and Bermudez) (p. I 31). 

USNM 642203, X 112; USGS f25813 (Hi 6-1).
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 4

BENTHONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM
PLATE 5

[All specimens from USOS f25813 (HI 6-1); a, front view; b, top view]

FIGURES 1, 2. Bulimina bleeckeri Hedberg (p. I 25).

1. USNM 642183, X 112.

2. USNM 642184, X 112.

3. Bulimina alazanensis Cushman (p. 1 25). 

USNM 642182, X 112.

4. Bulimina semicostata Nuttall (p. I 25). 

USNM 642185, X 112.

5. Virqulina zetina Cole (p. I 32). 

USNM 642186, X 148.

6. Bolivina beyrichi Reuss (p. I 24). 

USNM 642187, X 88.

7. Bolivina oligocaenica Spandel (p. I 24). 

USNM 642190, X 148.

8. Bolivina plicatetta mera Cushman and Ponton (p. I 24). 

USNM 642191, X 148.

9. Bolivina cf. B. minutissima Spandel (p. I 24). 

USNM 642189, X 148.

10. Bolivina rhomboidalis (Millett) (p. I 24). 

USMN 642192, X 88.

11. Bolivina (Loxostomum) rostra (Cushman) (p. I 25). 

USNM 642196, X 148.

12. Bolivina aff. B. tricosta Cushman and Bermudez (p. I 25). 

USNM 642193, X 194.

13. Bolivina fastigia Cushman (p. J 24). 

USNM 642188, X 88.

14. Bolivina vicksburgensis (Howe) (p. I 25). 

USNM 642194, X 194.

15. Angulogerina byramensis (Cushman) (p. I 24). 

USNM 642197, X 112.

16. Angulogerina cooperensis Cushman (p. I 24). 

USNM 642198, X 112.

17. Angulogerina vicksburgensis Cushman (p. I 24). 

USNM 642199, X 88.

18. Siphogenerina striata (Schwager) (p. I 31). 

USNM 642200, X 88.

19. Bolivina sp. B (p. I 25). 

USNM 642195, X 112.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 5

BULIMINIDAE FROM THE OLIGOCENE OF GUAM
PLATE 6

FIGURE 1. Eponides sp. (p. I 27).

USNM 642207, X 88; TJSGS f25813 (Hi 6-1); a, dorsal view; b, ventral view: c, edge view.

2. Astrononion cf. A. pusillum Hornibrook (p. I 24).

USNM 642249, X 148; TJSGS f25816 (Gj 14-1); a, side view; b, edge view.

3. Alabamina cornea Todd (p. I 23).

USNM 642209, X 88; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral view; c, edge view.

4. Astrononion cf. A. australe Cushman and Edwards (p. I 24).

USNM 642210, X 112; USGS f25813 (Hi 6-1); a, side view; b, edge view. 

5 Oridorsalis umbonatus (Reuss) (p. I 29).

USNM 642242, X 88; USGS f25815 (Gj 13-1); a, side view; b, ventral view; c, edge view.

6. Anomalina granosa (Hantken) (p. I 24).

Immature individual, USNM 642250, X 56; USGS f25816 (Gj 14-1); a, side view; b, edge view.

7. Eponides duprei ciervoensis Cushman and Simonson (p. I 27).

USNM 642241, X 88; USGS f25815 (Gj 13-1); a, dorsal view; b, ventral view; c, edge view.

8. Nonion maoricum (Stache) (p. I 29).

USNM 642233, X 44; USGS f25814 (Gj 11-1); a, side view; b, edge view.

9. Gyroidina girardana (Reuss) (p. I 28).

USNM 642232, X 44; USGS f25814 (Gj 11-1); a, dorsal view; b, ventral view; c, edge view.

10. Chilostomella cyclostoma Rzehak (p. I 26).

USNM 642212, X 27; USGS f 25813 (Hi 6-1).
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 6

BENTHONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM
PLATE 7

FIGURE 1. Cassidulina tricamerata Galloway and Heminway (p. I 25).

USNM 642211, X 88; USGS f25813 (Hi 6-1); a, front view; b, edge view.

2. Pararotalia byramensis (Cushman) (p. I 29).

USNM 642208, X 56; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral view.

3. Anomalina granosa (Hantken) (p. I 24).

USNM 642234, X 44; USGS f25814 (Gj 11-1); a, dorsal view; b, ventral 

view; c, edge view.

4. Cibicides carinatus (Terquem) (p. I 26).

USNM 642214, X 56; USGS f25813 (Hi 6-1); ventral (convex) side.

5. Cibicides havanensis Cushman and Bermudez (p. I 26).

USNM 642243, X 56; USGS f25815 (Gj 13-1) ; a, dorsal view; b, ventral view; 

c, edge view.

6. Cycloloculina cubensis Cushman and Bermudez (p. I 26). 

USNM 642213, X 56; USGS f25813 (Hi 6-1).

7. Cibicides praecursorius (Schwager) (p. I 26).

USNM 642215, X 56; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral view; 

c, edge view.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 7

BENTHONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM
PLATE 8

FIGURES 1, 4. Chiloguembelina cubensis (Palmer) (p. I 33).

1. USNM 642217, X 194; USGS 125813 (Hi 6-1); a, side view; b, top view. 

4. USNM 642216, X 180; USGS f25813 (Hi 6-1).

2. Globigerinella danvillensis (Howe and Wallace) (p. I 33).

USNM 642219, X 194; USGS £25813 (Hi 6-1); a, side view; b, edge view.

3. Cassigerinella chipolensis (Cushman and Ponton) (p. I 33).

USNM 642218, X 180; USGS £25813 (Hi 6-1); a, front view; b, edge view.

5. Globigerina conglomerate, Schwager (p. I 33).

USNM 642228, X 56; USGS £25813 (Hi 6-1); a, dorsal view; b, ventral view; c, edge view.

6. Globigerina dissimilis Cushman and Bermudez (p. I 33).

USNM 642244, X 93; USGS £25815 (Gj 13-1); a, dorsal view; b, ventral view; c, edge view.

7. Globigerina amphapertura Belli (p. I 33).

USNM 642221, X 88; USGS £25813 (Hi 6-1), a, dorsal view; b, ventral view; c, edge view.

8. Hanikenina t«/Zato,Howe (p. I 34).

USNM 642220, X 88; USGS £25813 (Hi 6-1); a, side view; fc, edge view.

9. Globigerina yeguaensis Weinzierl and Applin (p. I 33).

USNM 642229, X 88; USGS £25813 (Hi 6-1); a, dorsal view; b, ventral view; c, edge view.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE

PLANKTONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM
PLATE 9

[a, Dorsal view; 6, ventral view; c, edge view]

FIGURE 1. Globigerina danvillensis Howe and Wallace (p. I 33). USNM 642222,

X 194; USGS f25813 (Hi 6-1). 

2. GloUgerina suieri (Bolli) (p. I 33). USNM 642227, X 148; USGS f25813

(Hi 6-1). 

3, 4. Globigerina opima nana (Bolli) (p. I 33).

3. USNM 642245, X 112; USGS f25815 (Gj 13-1).

4. USNM 642226, X 112; USGS f25813 (Hi 6-1).
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 9

SPECIES OF GLOBIGERINA FROM THE OLIGOCENE OF GUAM
PLATE 10

FIGURES 1-5. Globigerina sellii (Borsetti) (p. 1 33).

1. USNM 642236, X 56; USGS f25814 (Gj 11-1); a, dorsal view; b, ventral 

view; c, edge view.

2. USNM 642251, X 56; f25816 (Gj 14-1); dorsal view.

3. USNM 642246, X 56; USGS f25815 (Gj 13-1); a, dorsal view; b, ventral 

view: e, edge view.

4. USNM 642252, X 56; USGS f25816 (Gj 14-1); ventral view.

5. USNM 642253, X 56; USGS f25816 (Gj 14-1); edge view. 

6-8. Globigerina gortanii (Borsetti) (p. I 33).

6. USNM 642235, X 66; USGS f25814 (Gj 11-1); a, dorsal view; b, edge 

view.

7. USNM 642223, X 112; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral 

view; c, edge view.

8. USNM 642224, X 88; USGS f25813 (Hi 6-1); a, dorsal view; b, ventral 

view; c, edge view.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 10

SPECIES OF GLOBIGERINA FROM THE OLIGOCENE OF GUAM
PLATE 11

[o, Dorsal view; 6, ventral view; c, edge view]

FIGURE 1. Globigerina increbescens Bandy (p. I 33j.

USNM 642225, X 88; USGS f25813 (Hi 6-1).

2. Globigerina senilis Bandy (p. I 33).

USNM 642247, X 88"; USGS £25815 (Gj 13-1).

3. Globigerina tripartita tapuriensis Blow and Banner (p. I 33). 

USNM 642248, X 56; USGS £25815 (Gj 13-1).

4. Globigerinoides trilobus (Reuss)? (p. I 33).

USNM 642230, X 93; USGS £25813 (Hi 6-1).
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 11

PLANKTONIC FORAMINIFERA FROM THE OLIGOCENE OF GUAM
PLATE 12

FIGURE 1. Dentalina communis d'Orbigny (p. I 26).

USNM 642254, X 44; USGS f25805 (Rr 15-1).

2. Orthomorphina fijiensis (Cushman) (p. I 29).

USNM 642255, X 88; USGS f25805 (Rr 15-1).

3. Stilostomella verneuili (d'Orbigny) (p. I 31).

USNM 642258, X 88; USGS f25805 (Rr 15-1).

4. Orthomorphina parvula Todd, n. sp. (p. I 29).

Holotype, USNM 642256, X 148; USGS f25805 (Rr 15-1).

5. Orthomorphina perversa (Schwager) (p. I 29).

USNM 642257, X 56; USGS f25805 (Rr 15-1).

6. Nodosaria equisetiformis Schwager (p. I 29).

USNM 642296, X 56; USGS f25809 (Ts 5-6).

7. Dentalina sp. A (p. I 26).

USNM 642298, X 44; USGS f25808 (Ts 5-7).

8. Karreriella bradyi (Cushman) (p. I 28).

USNM 642259, X 44; USGS f25805 (Rr 15-1).

9. Fissurina circulum Seguenza (p. I 27).

USNM 642260, X 88; USGS f25805 (Rr 15-1); a, front view; b, top view.

10. Fissurina formosa (Schwager) (p. I 27).

USNM 642261, X 88; USGS f25805 (Rr 15-1).

11. Bolivina silvestrina Cushman (p. I 24).

USNM 642262, X 88; USGS f25805 (Rr 15-1); a, front view; 6, top view.

12. Bolivina aff. B. sinuata Galloway and Wissler (p. I 24). 

USNM 642263, X 88; USGS f25805 (Rr 15-1).

13. Astrononion novozealandicum Cushman and Edwards (p. I 24).

USNM 642268, X 112; USGS f25805 (Rr 15-1). 

14, 15. Pleurostomella alternans Schwager (p. I 29).

14. USNM 642264, X 88; USGS f25805 (Rr 15-1); a, front view; b, side view.

15. USNM 642265, X 88; USGS f25805 (Rr 15-1); a, front view; b, side view. 

16. Ellipsopleurostomella sp. (p. I 27).

USNM 642266, X 88; USGS f25805 (Rr 15-1); a, side view; 6, top view.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 12

BENTHONIC FORAMINIFERA FROM THE MIOCENE OF GUAM
PLATE 13

FIGURE 1. Cassidulina sagamiensis Asano and Nakamura (p. I 25).

USNM 642300, X 112; USGS f25807 (Ts 5-10); a, front view; b, edge view.

2. Cassidulina aft. C. angulosa Cushman (p. I 25).

USNM 642271, X 140; USGS f25805 (Rr 15-1); a, front view; b, edge view.

3. Cassidulina subglobosa Brady (p. I 25).

USNM 642273, X 66; USGS f25805 (Rr 15-1); a, front view; 6, rear view; 

c, edge view.

4. Cassidulina carandelli Colom (p. I 25).

USNM 642299, X 112; USGS f25807 (Ts 5-10); a, front view; 6, rear view; 

c, end view.

5. Oridorsalis umbonatus (Reuss) (p. I 29).

USNM 642270, X 88; USGS f25805 (Rr 15-1); a, dorsal view; 6, ventral 

view; c, edge view.

6. Cassidulina pacifica Cushman (p. I 25).

USNM 642272, X 88; USGS f25805 (Rr 15-1); a, front view; 6, rear view.

7. Osangularia culler (Parker and Jones) (p. I 29).

USNM 642269, X 44; USGS f25805 (Rr 15-1); a, dorsal view; 6, ventral 

view; c, edge view.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 13

CASSIDULINIDAE AND ROTALIIDAE FROM THE MIOCENE OF GUAM
'"" ' PLATE 14

 t N

s * [AlUspecimens from USGS f26805 (Rr 15-1)]

1. Globigerina conglomerates Schwager (p. I 33). - \ 

USNM 642278, X 56; a, dorsal view; 6, ventral view; c, edge view.

2. Globoquadrina altispira (Cushman and Jarvis) (p. I 33). 

USNM 642:281, X 56; u, dorsal view; 6, side view.

3. Globigerinoides sacculifer (Brady) (p. I 33).

USNM 642280, X 44; a, dorsal view; b, ventral view; c, edge view.

4. Globigerinoides canglobatus (Brady) (p. I 33).

USNM 64227^, ,,X 44; " . . . '

5. Globigerind^&G,.G. tipertura Gushman (p. I 33). -

- ; " ' USNM,642274, X 148; a, dorsal view; b, ventral view; c, edge view. 

6,- 7. 'Globigerina^nepenthes Todd (p. I 33). , 

"" ' '6. Tmmature individual, USNM 642277, X 88. 

7. Adult, USNiVl''642276, X 88.

8. Globigerirta hexagoria. Natland (p. I 33).

USNM 642275, X 148; «, dorsal view; 6, ventral view; c, edge view.

9. Pulleniatina obliquiloculata (Parker and Jones),(p. I 34).

USNM 642285, X 56; a, dorsal view; 6, ventral view: c, edge view.

10. Candeina nitida d'Orbigny (p. I 33). 

USNM 642286, X 148"

4 '
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 1 4

PLANKTONIC FORAMINIFERA FROM THE MIOCENE OF GUAM
PLATE 15

[All specimens from USGS f25805 (Er 15-1); a, dorsal view; b, ventral view; c, edge view]

FIGURES 1, 4. Orbulina suturalis Bronnimann (p. I 34). 

1. USNM 642283, X 88. 

4. USNM 642282, X 56.

2. Ehrenbergina albatrossi Cushman (p. I 27). 

USNM 642267, X 56.

3. Sphaeroidinella kochi (Caudri) (p. I 34). 

USNM 642288, X 27.

5. SphaeroidineUa seminuHna (Schwager) (p. I 34). 

USNM 642289. X 56.

6. Sphaeroidinella disjunclu Finlay (p. I 34). 

USNM 642287, X 88.

7. Hastigerina pelagica (d'Orbigny) (p. I 34). 

USNM 642284, X 88.

8. Globorotalia menardii fijiensis Cushman (p. I 33). 

USNM 642290, X 56.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 1 5

CASSIDULINIDAE, GLOBIGERINIDAE, AND GLOBOROTALIIDAE FROM THE MIOCENE OF GUAM
PLATE 16

[a, Dorsal view; b, ventral view; c, edge view]

FIGURE 1. Globorotalia menardii-tumida transition form (p. I 33). 

U8NM 642292, X 44; USGS f25805 (Rr 15-1).

2. Globorotalia hirsuta (d'Orbigny) (p. I 33).

USNM 642295, X 56; USGS £25805 (Rr 15-1).

3. Globorotalia menardii ungulata Bermudez (p. I 33). 

USNM 642291, X 180; USGS £25805 (Rr 15-1).

4. Globorotalia tumida (Brady) (p. I 33).

USNM 642297, X 56; USGS £25809 (Ts 5-6).

5. Globorotalia fohsi robusta Bolli (p. I 33).

USNM 642294, X 88; USGS £25805 (Rr 15-lj.

6. Globorotalia tumida flexuosa (Koch) (p. I 33).

USNM 642293, X 44; USGS £25805 (Rr 15-1).
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 16

SPECIES OF GLOBOROTALIA FROM THE MIOCENE OF GUAM
PLATE 17

[a, Side view; 6, apertural view]

FIGURE 1. Saqenina frondescens (Brady) (slender threads) and Placopsilinal sp. (arenaceous tubes) attached to a fragmentary

specimen of Cycloclypeus carpenteri Brady (p. I 26, I 29, and I 31). 

USNM 642328, X 10; USGS f25791 (Guam 664).

2. Nubeculina divaricata advena Cushman (p. I 29). 

USNM 642303, X 27; USGS f25748 (Guam 468).

3. Clavulina difformis Brady (p. I 26).

USNM 642302, X 27; USGS f25744 (Guam 450).

4. Quinqueloculina poeyana d'Orbigny (p. 1 30).

USNM 642307, X 112; USGS f25754 (Guam 524).

5. Flintina bradyana Cushman (p. I 27).

USNM 642308, X 44; USGS f25754 (Guam 524).

6. Quinqueloculina subcuneata Cushman (p. I 30).

USNM 642301, X 66; USGS f25740 (Guam 348).

7. Triloculina subgranulata Cushman (p. I 32).

USNM 642304, X 56; USGS f25749 (Guam 470).

8. Quinqueloculina agglutinans d'Orbigny (p. I 30).

USNM 642310, X 56; USGS f25765 (Guam 551).

9. Quinqueloculina bosciana d'Orbigny (p. I 30).

USNM 642311, X 112; USGS f25768 (Guam 556).

10. Articulina sp. (p. I 24).

USNM 642321, X 88; USGS f25790 (Guam 663).

11. Biloculinetta globula (Bornemann) (p. I 24),

USNM 642315, X 56; USGS f25789 (Guam 662).
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 17

HYPERAMMINIDAE, PLACOPSILINIDAE, VALVULINIDAE, AND MILIOLIDAE FROM RECENT

SEDIMENTS AROUND GUAM
PLATE 18

FIGURE 1. Robulus orbicularis (d'Orbigny) (p. I 30).

USNM 642316, X 56; USGS f25789 (Guam 662) ; a, side view; b, edge view.

2. Frondicularia robusta Brady var. repanda Cushman (p. I 27). 

USNM 642329, X 27; USGS f25791 (Guam 664).

3. Darbyella sp. (p. I 26).

USNM 642322, X 34; USGS f25790 (Guam 663) ; a, side view; b, edge view showing slit aperture.

4. Nodosaria calomorpha Reuss (p. I 28).

USNM 642323, X 66; USGS f25790 (Guam 663).

5. Astacolus planulatus Galloway and Wissler (p. I 24).

USNM 642317, X 27; USGS f25789 (Guam 662); a, side view; b, edge view.

6. Reussella pulchra Cushman (p. I 30).

USNM 642331, X 88; USGS f25791 (Guam 664).

7. Astacolus bradyi (Cushman) (p. I 24).

USNM 642320, X 44; USGS f25789 (Guam 662); a, side view; b, ed^e view.

8. Bolivina hantkeniana Brady (p. I 24).

USNM 642330, X 56; USGS £25791 (Guam 664); a, side view; b, edge view.

9. Cassidulina minuta Cushman (p. I 25).

USNM 642327, X 112; USGS f25790 (Guam 663); a, apertural view; b, edge view.

10. Cassidulina delicata Cushman (p. I 25).

USNM 642326, X 148; USGS f25790 (Guam 663); a, apertural view; b, edge view.

11. Elphidium hyalocostatum Todd (p. I 27).

USNM 642305, X 88; USGS f25750 (Guam 472); o, side view; 6, edge view.

12. Neoconorbina crustata (Cushman) (p. I 28).

USNM 642324, X 66; USGS £25790 (Guam 663); o, dorsal view; b, ventral view; c, edge view.

13. Rotorbindla mira (Cushman) (p. I 31).

USNM 642313, X 44; USGS £25781 (Guam 615), a, dorsal view; b, ventral view; c, edge view.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 18

LAGENIDAE, BULIMINIDAE, ELPHIDIIDAE, DISCORBIDAE, AND CASSIDULINIDAE FROM RECENT

SEDIMENTS AROUND GUAM
PLATE 19

[a, Dorsal view; b, ventral view; c, edge view]

FIGURE 1. Pegidia dubia (d'Orbigny) (p. I 29).

USNM 642319, X 32; USGS f25789 (Guam 662).

2. Cancris sagra (d'Orbigny) (p. I 25).

USNM 642309, X 88; USGS f25757 (Guam 537).

3. Bronnimannia haliotis (Heron-Alien and Earland) (p. I 25). 

USNM 642314, X 88; USGS f25788 (Guam 661).

4. Baggina totomiensis Makiyama (p. I 24).

USNM 642332, X 44; USGS f25791 (Guam 664).

5. Eponides repandus (Fichtel and Moll) (p. I 27).

USNM 642312, X 27; USGS f25779 (Guam 610A).

6. Streblus beccarii var. of Todd 1957 (p.-I 32).

USNM 642306, X 88; USGS f25752 (Guam 510).

7. Stomatorbina concentrica (Parker and Jones) (p. I 31). 

USNM 642325, X 56; USGS f25790 (Guam 663).

8. Anomalina coronata Parker and Jones (p. I 24).

USNM 642318, X 44; USGS £25789 (Guam 662).
GEOLOGICAL SURVEY PROFESSIONAL PAPER 403-1 PLATE 19

PEGIDIIDAE, ROTALIIDAE, AND ANOMALINIDAE FROM RECENT SEDIMENTS AROUND GUAM

Geology and Hydrology of 

Guam, Mariana Islands

GEOLOGICAL SURVEY PROFESSIONAL PAPER 403

This volume was published 

as separate chapters A I
UNITED STATES DEPARTMENT OF THE INTERIOR 

STEW ART L. UDALL, Secretary

GEOLOGICAL SURVEY 

William T. Pecora, Director
CONTENTS

[Letters designate the separately published chapters]

(A) General geology of Guam, by Joshua I. Tracey, Jr., Seymour O. Schlanger, John T. Stark, David B. Doan, and Harold G. May.

(B) Marine geology of Guam, by K. O. Emery.

(C) Petrology of the volcanic rocks of Guam, by John T. Stark, with a section on Trace elements in the volcanic rocks of Guam, 

by Joshua I. Tracey, Jr., and John T. Stark.

(D) Petrology of the limestones of Guam, by Seymour O. Schlanger, with a section on Petrography of the insoluble residues, by

J. S, Hathaway and Dorothy Garroll.

(E) Tertiary larger Foraminifera from Guam, by W. Storrs Cole. 

(F) Mineralogy of selected soils from Guam, by Dorothy Carroll and John C. Hathaway, with a section on Description of soil

profiles, by Oarl H. Stensland.

(G) Fossil and recent calcareous algae from Guam, by J. Harlan Johnson, 

(H) Hydrology of Guam, by Porter E. Ward, Stuart H. Hoffard, and Dan A. Davis. 

(I) Smaller Foraminifera from Guam, by Ruth Todd.