bluuebunny/crossref_metadata_2025 huggingface dataset:
Notice of transfer of figured specimens of North American Devonian cyclocystoids
Authors: Orr R. William , Fluegeman Richard H.
Published: August 2016

In 1990 (Fluegeman and Orr) the writers published a short study on known North American cyclocystoids. This enigmatic group is best represented in the United States Devonian by only two specimens, both illustrated in the 1990 report. Previously, the Cortland, New York, specimen initially described by Heaslip (1969) was housed at State University College at Cortland, New York, and the Logansport, Indiana, specimen was housed at Ball State University, Muncie, Indiana. Both institutions recognize the importance of permanently placing these rare specimens in a proper paleontologic repository with other cyclocystoids. Therefore, these two specimens have been transferred to the curated paleontologic collection at the University of Cincinnati Geological Museum where they can be readily studied by future workers in association with a good assemblage of Ordovician specimens of the Cyclocystoidea.
Candidates for Office, 1993 Annual Ballot
Authors: Wolberg Donald L.
Published: August 2016

At its midyear meeting in Iowa City, Iowa, on 5 May 1992, Council of The Paleontological Society selected the following candidates for office from nominees proposed by the Nominating Committee:

President-Elect (1993–1994): Craig C. Black, Los Angeles, CA

Treasurer (1993–1996): Johnny A. Waters, Carrollton, GA

Councilor-at-large under 40 (1993–1995): Dana H. Geary, Madison, WI
Type species of the basal Ibexian trilobite Corbinia Walcott, 1924
Authors: Westrop Stephen R. , Ludvigsen Rolf
Published: August 2016

The type species of the eurekiid trilobite Corbinia Walcott, C. horatio Walcott, 1924, possesses very short palpebral lobes located opposite 2p glabellar lobe. The palpebral lobes of species of Eurekia Walcott and of Corbinia apopsis Winston and Nicholls, 1967, are considerably longer and located opposite 1p and 2p glabellar lobes. Corbinia is here restricted to the type species, and C. apopsis is assigned to Eurekia. Corbinia horatio occurs in the Basal Silty Member of the Survey Peak Formation of southern Alberta and appears to be confined to the lower part of the Eurekia apopsis Subzone of the Saukia Zone (basal Ibexian).
Redescription of the genus Shikamaia, and clarification of the hinge characters of the family Alatoconchidae (Bivalvia)
Authors: Yancey Thomas E. , Ozaki Kimihiko
Published: August 2016

A new full description of the bivalve Shikamaia akasakaensis Ozaki (genotype species of Shikamaia) is presented, providing the first documentation of its hinge and ligament, and resolving many uncertainties about Shikamaia, the first described genus of the Permian bivalve family Alatoconchidae. The genus Shikamaia has a unique ligament, modified from typical duplivincular ligaments in occupying only half of the cardinal area, and having ligament sheets that extend themselves towards the beak with continued growth. This ligament is strikingly different from the ligaments of other alatoconchid genera. All alatoconchids are believed to have a common ancestry, but the magnitude of difference in their hinges warrants dividing the family into two subfamilies. The subfamily Saikraconchinae is erected new.
Use of EDTA for palynomorph extraction from evaporites
Authors: Rueger Bruce F.
Published: August 2016

Presence of palynomorph assemblages that display exquisite preservation in evaporite deposits makes them invaluable as age indicators, as often no other fossils are present. However, such use of palynomorphs has been extremely limited because of complications in extraction from the surrounding rock material. Palynomorphs found in evaporites frequently cannot be removed by conventional uses of hydrofluoric and hydrochloric acids, or by modifications of these techniques (Sittler, 1955; Freudenthal, 1964; and Visscher, 1966), as neither acid is capable of removing significant quantities of sulfate minerals. Inadequate removal of these minerals prevents a good concentration of spores and pollen and hinders the preparation of useful microscope slide mounts.
A correction to Hoare and Mapes (1985)
Authors: Hoare R. D.
Published: August 2016

In the recent paper on Mississippian and Pennsylvanian polyplacophorans (Hoare and Mapes, 1985) the proposed new genus Euleptochiton was inadvertently assigned to the family Ochmazochitonidae Hoare and Smith, 1984, instead of the family Permochitonidae Sirenko and Starobogatov, 1977. In the same paper the estimated size of Colapterochiton decorus should read 5.5 cm.
Biogeographic influences on Early Cretaceous paleocommunities, Western Interior
Authors: Scott R. W.
Published: August 2016

A preliminary comparison of Early Cretaceous paleocommunities in the Caribbean and contiguous Southern Western Interior provinces of North America suggests that the important factors for the differences were climate, basinal tectonics, sedimentation rates and the resulting substrates, environmental heterogeneity, evolution rates, and migration paths. Some paleocommunities were endemic to one province, and others were found in both provinces but differed in relative abundance patterns, species composition, diversity, and trophic structure.
The Early Devonian atrypoid brachiopod Tibetatrypa n. gen. from Xizang (Tibet, China)
Authors: Copper Paul , Hong-Fei Hou
Published: August 2016

Early Devonian (Pragian-Emsian) rocks in the Xainza region of central Xizang (Tibet) yield a shallow-marine, carbonate-platform fauna of corals, brachiopods, dacryoconarids, nautiloids and conodonts, among which Tibetatrypa n. gen. is locally a prominent constituent. The fauna broadly resembles that of western Europe, the Altai-Sayan region, the Urals and western Qinlin province of China, but differs from the South China faunas. Tibetatrypa, related to the Silurian genus Nalivkinia, is the youngest and largest member of the subfamily Clintonellinae, and is the first Devonian brachiopod described from Tibet.
Abnormalities in Pentremites Say (Blastoidea) from the Pella Formation (Upper Mississippian) of Iowa
Authors: Horowitz Alan S. , Able Susan , Strimple H. L.
Published: August 2016

Approximately 10,000 determinable specimens of Pentremites pulchellus Ulrich (Blastoidea, Echinodermata) from a single quarry in the Pella Formation near Oskaloosa, Mahaska County, Iowa, have been examined for abnormal morphologic characters. The total frequency (2.7%) and the frequency among different types of abnormalities (ambulacral 29%; basal 46%; symmetrical 12%) are significantly different in the Pella material than in previously published studies (Wanner, 1932; Macurda, 1980). The greater frequency of abnormalities in the Pella Formation than in previous studies may reflect higher environmental stress because of variable temperatures or salinities or both. The kinds of abnormalities are the same among published studies, which suggest that the underlying biological causes of abnormalities were similar throughout the geologic history of the blastoids. Ambulacral abnormalities are symmetrically distributed, but the division and inversion of basal plates show an asymmetrical distribution as previously recorded by Macurda (1980). The Pella Formation is of Genevievian age (Upper Mississippian) based on the occurrence of Pugnoides ottumwa (White) and convex ambulacra in Pentremites pulchellus. Other unequivocal guide fossils are unknown in the Pella Formation.
A new oromerycid (Mammalia, Artiodactyla) from the Early Oligocene of Montana
Authors: Prothero Donald R.
Published: August 2016

A new oromerycid,Montanatylopus matthewin. gen., n. sp., is described from the early medial Chadronian (early Oligocene, about 36 Ma) of McCarty's Mountain, Madison County, Montana. It is much larger and has higher crowned teeth than other known oromerycids.Montanatylopusis most closely related toEotylopusfrom the Chadronian of the High Plains and Trans-Pecos Texas.
Late Hemphillian monodactyl horses (Mammalia, Equidae) from the Bone Valley Formation of central Florida
Authors: MacFadden Bruce J.
Published: August 2016

Isolated cheek teeth of the hypsodont one-toed horses Astrohippus stocki and Dinohippus mexicanus are described from ten localities within the classic vertebrate-bearing beds of the Bone Valley phosphate mining district and one new locality (containing the Lockwood Meadows Local Fauna) in Sarasota, Florida. All occurrences of these taxa are from the upper Bone Valley Formation and further confirm a late Hemphillian (late Miocene to early Pliocene) age, or within the range of about 5.4 to 4.5 myBP for this part of the sedimentary sequence. In contrast to the common occurrences of hipparions in the Bone Valley Formation, A. stocki and D. mexicanus are relatively rare. In some dental charcters such as protocone length and crown height, A. stocki and D. mexicanus are no more advanced in their stage of evolution than the advanced three-toed horses Neohipparion eurystyle, N. gidleyi and Nannippus peninsulatus.
Catalogue revisions of some type specimens of fossil vertebrates in the systematic collections at the South Dakota School of Mines and Technology
Authors: Martin James E.
Published: August 2016

In an effort to update taxonomic, locality, and morphological data for type specimens in the Museum of Geology, a number of catalogue and published errors were discovered. This contribution is intended to inform researchers of the errors and to remedy those problems that can now be solved. Original omissions of collection data have been updated as much as possible without introducing unsubstantiated conclusions. The discrepancies are reviewed as numerical and locality changes and are arranged taxonomically.
Permian Ingelarellidae (Brachiopoda) from Western Australia and Argentina
Authors: Archbold N. W. , Thomas G. A.
Published: August 2016

Representatives of the Ingelarellidae are described from the marine Permian sequences of the Perth, Carnarvon, Canning and Bonaparte Gulf basins of Western Australia. The subfamily Ingelarellinae Campbell (1959) is raised to family status and the new subfamily Notospiriferinae is proposed; content of the Ingelarellidae is reviewed. New taxa described areTomiopsis notoplicatusn. sp.,T. woodwardin. sp.,T. rarusn. sp.,T. pauciplicatusn. sp.,T. teichertin. sp.,T. globosusn. sp.,T. balgoensisn. sp. andT. hardmanin. sp. Additional material from Western Australia belonging toTomiopsisand possiblyFredericksiais briefly described.Tomiopsis harringtonin. sp. is described from the southern hills of Buenos Aires (eastern Argentina).
Kaesleria, a new ostracode genus from the Aruma Formation (Upper Cretaceous) of Saudi Arabia
Authors: Al-Furaih Ali A. F.
Published: August 2016

A new trachyleberid ostracode genus, Kaesleria, is proposed for seven species from the Upper Cretaceous of Saudi Arabia: Kaesleria bilirata (Al-Furaih, 1980), K. biventrilirata n. sp., K. convexa n. sp., K. faceta n. sp., K. falcata n. sp., K. trahea (Al-Furaih, 1980), and K. undulata (Al-Furaih, 1980). Species of this genus are short ranging, relatively abundant, and very useful stratigraphically in Saudi Arabia. Kaesleria bilirata and K. trahea are particularly good markers of the top of the Maastrichtian, because their last occurrences are at the extreme top of it.
Crinoids of the Champlainian (Middle Ordovician) Guttenberg Formation—upper Mississippi Valley region
Authors: Kolata Dennis R.
Published: August 2016

A well-preserved and locally abundant crinoid fauna has been discovered in the lower part of the Champlainian (Middle Ordovician) Glenhaven Member of the Guttenberg Formation in the Upper Mississippi Valley region. The material consists of the dicyclic inadunates Cupulocrinus levorsoni n. sp., C. jewetti (E. Billings) and monocyclic camerate Pycnocrinus gerki n. sp.
Scale microfossils from the Early Cambrian of northwest Canada
Authors: Allison Carol Wagner , Hilgert Jerry W.
Published: August 2016

Scale microfossils are locally abundant in rocks of the uppermost Tindir Group and basal beds of the overlying Funnel Creek Limestone in northwest Canada. Co-occurring organic-walled fossils in this microbial mat biota resemble forms described from the Upper Proterozoic but mineralized spicules of Cambrian aspect are also present. The fossils occur in chert nodules or beds in flat laminated limestones interpreted to represent accumulation in a subtidal environment.

The scale microfossils are of three basic shapes: Group 1, simple imperforate scales; Group 2, thin disk-like scales with prominent, regularly arranged pores; Group 3, ring-like scales with distinct three dimensional morphology. All taxa in Groups 1 and 2 have scales of a single morphology and narrow size range; Group 3 taxa may contain one, two, or (?)three morphotypes and sizes of scales. The scales of Group 1 taxa are not closely comparable to known Chromophyta but are similar to scales of several modern Rhizopoda. Some of the Group 2 taxa can be compared to members of the Chrysophyta, whereas others have general resemblance to centric diatom valves. Most Group 3 taxa are morphologically comparable to members of the Prymnesiophyta. All scales that could be analyzed petrographically are now siliceous and none could be confirmed as polycrystalline.

The scale microfossils are referred to new taxa, including 17 genera, 26 species, and 6 varieties. Newly described taxa are: Group 1) Archeoxybaphon polykeramoides n. gen., n. sp., Archeoxybaphon diminutum n. sp., Archeoxybaphon amydrum n. sp., Hyaloxybaphon monokeramoides n. gen., n. sp.; Group 2) Paleohexadictyon litosum n. gen., n. sp., Paleohexadictyon myriotrematum n. sp., Paleohexadictyon coroniforme n. sp., Paleohexadictyon coroniforme var. tetragonum n. var., Paleohexadictyon coroniforme var. delicatum n. var., Chilodictyon caliporum n. gen., n. sp., Chilodictyon caliporum var. striatimarginatum n. var., Chilodictyon myriocanthum n. sp., Characodictyon skolopium n. gen., n. sp., Characodictyon skolopium var. tetragonum n. var., Characodictyon skolopium var. soleniscum n. var., Characodictyon diskolopium n. sp., Characodictyon diskolopium var. circulare n. var., Radiocerniculum inornatum n. gen., n. sp., Spinicerniculum tribulosum n. gen., n. sp.; Group 3) Petasisquama alta n. gen., n. sp., Petasisquama versicorona n. sp., Petasisquama laciniata n. sp., Bicorniculum brochum n. gen., n. sp., Confinisquama fimbriata n. gen., n. sp., Aqualisquama centritubula n. gen., n. sp., Invaginatibalteus dimorphus n. gen., n. sp., Invaginatibalteus depressus n. sp., Paterisquama crassa n. gen., n. sp., Altarmilla multistriata n. gen., n. sp., Patinisquama cirratomarginata n. gen., n. sp., Paleocrassalimbus spinosus n. gen., n. sp., and Paleomegasquama coccolithoides n. gen., n. sp.
A new crab, Zygastrocarcinus cardsmithi (Crustacea, Decapoda), from the lower Pierre Shale, southeastern Montana
Authors: Bishop Gale A.
Published: August 2016

The third species belonging to Zygastrocarcinus from the Cretaceous of the Western Interior is represented by a single carapace collected from below the Groat Sandstone Bed, Gammon Ferruginous Member, Pierre Shale of Carter County, Montana. Comparison of Zygastrocarcinus cardsmithi n. sp. with the other North American congeners, Z. mendryki (Bishop, 1982) and Z. griesi Bishop, 1983, and with the Pacific Slope species Z. richardsoni (Woodward, 1896) suggests early separation of the Pacific Slope and Western Interior lineage having Z. cardsmithi as a possible ancestor to Z. mendryki and Z. griesi.
Peonza: new gastropod genus from the middle Tertiary of Patagonia and Chile
Authors: Olivera Amalia M. , Zinsmeister William J. , Parma S. Graciela
Published: August 2016

A new Tertiary gastropod genus, Peonza n. gen., is described, along with two new species, P. torquata from southern Argentina and P. benjamina from southern Chile. These muricacean gastropods, of uncertain familial status, occur in the late Eocene San Julián Formation and in the late Oligocene to early Miocene? Monte León Formation, Santa Cruz Province, Argentina. They also were recorded in the (probably) Oligocene Magellanian beds in Tierra del Fuego, Argentina, and in early Miocene deposits of the Tres Montes region in the Chilean Canals. In spite of the small number of specimens, Peonza n. gen. seems to have had a wide geographic and temporal distribution.
New echinoderms from the Early Ordovician of west Texas
Authors: Sprinkle James , Wahlman Gregory P.
Published: August 2016

Four specimens of blastozoan and crinozoan echinoderms are described from the Lower Ordovician El Paso Group in the southern Franklin Mountains just north of El Paso, west Texas.Cuniculocystis flowerin. gen. and sp., based on two partial specimens, appears to be a typical rhombiferan in most of its morphologic features except that it lacks pectinirhombs and instead has covered epispires (otherwise known only from Middle Ordovician eocrinoids) opening on most of the thecal plate sutures. The covered epispires inCuniculocystisindicate that some early rhombiferans had alternate respiratory structures and had not yet standardized on pectinirhombs, a feature previously used as diagnostic for the class Rhombifera.Bockia?elpasoensisn. sp. is a new eocrinoid based on one poorly preserved specimen that has a small ellipsoidal theca and unbranched brachioles attached to a flat-topped spoutlike summit. It is the earliest known questionable representative of this genus and the only one that has been described from North America.Elpasocrinus radiatusn. gen. and sp. is an early cladid inadunate crinoid based on a single well-preserved calyx. It fits into a lineage of early cladids leading to the dendrocrinids and toCarabocrinus.Several additional separate plates, stem segments, and a holdfast of these and other echinoderms are also described.
Early and Middle(?) Cambrian metazoan and protistan fossils from West Africa
Authors: Culver Stephen J. , Repetski John E. , Pojeta John , Hunt David
Published: August 2016

Supposed Upper Proterozoic strata in the southwest Taoudeni Basin, Guinea and Senegal, and from the Mauritanide fold belt, Mauritania, have yielded mostly poorly preserved small skeletal fossils of metazoan and protistan origin. Problematic, but possible echinoderm material and spicules of the heteractinid sponge Eiffelia dominate the Taoudeni Basin assemblage. The age of the material is not certain but the paleontologic data suggest an Early Cambrian age for the stratigraphically lowest faunas, and a Middle Cambrian age is possible for the stratigraphically highest collections.
Taxonomy and magnetobiochronology of Tribrachiatus and Rhomboaster, two genera of Calcareous nannofossils
Authors: Wei Wuchang , Zhong Shilan
Published: August 2016

The genus Tribrachiatus (all species of which are widely used stratigraphic markers) and its related genus Rhomboaster are studied in type samples and in five DSDP/ODP sites that have magnetostratigraphies and range from low through high latitudes. Rhomboaster calcitrapa, R. spineus, and R. bitrifida are shown to be junior synonyms of R. cuspis. Rhomboaster transforms into T. bramlettei by flattening of the nannolith. This makes the location of the first occurrence (FO) of T. bramlettei difficult and imprecise. The FO of Rhomboaster, however, is less ambiguous and more reliable for global stratigraphic correlation. Tribrachiatus contortus has a very short (< 1 m.y.) and consistent stratigraphic range. The FO of T. orthostylus is located very near the top of Chron C24r and slightly below the last occurrence of T. contortus. This study also presents detailed morphometric data on the changes from T. bramlettei to T. contortus to T. orthostylus, and calibrates their changes through time with magnetostratigraphy. This shows a detailed picture of the progressive evolution in this group as well as offers an age curve for high-resolution stratigraphic correlation.
New Early Devonian pteraspidids (Agnatha, Heterostraci) from Death Valley National Monument, southeastern California
Authors: Elliott David K. , Ilyes Robert R.
Published: August 2016

Two species and genera of pteraspidids (Agnatha, Heterostraci), Blieckaspis priscillae n. gen., and Panamintaspis snowi n. gen. and n. sp., together with two undetermined species, are described from the lower part of the Lippincott Member of the Lost Burro Formation, southeastern California. The sharing of similar faunal elements with the Early Devonian assemblages of the Sevy Dolomite and Water Canyon Formation of Utah and Nevada, respectively, together with stratigraphic constraints on the age of the Death Valley fauna, suggest that these assemblages are age equivalent and have a late Emsian (inversus–serotinus Zones) age. The vertebrate-bearing unit of the Lippincott Member is interpreted as a channel-fill deposit laid down in an estuarine environment with low or fluctuating salinity.
Stromatoporoids from the Devonian (Eifelian to Lowest Frasnian) of Manitoba, Canada
Authors: Stearn Colin W.
Published: August 2016

Twenty-two taxa of stromatoporoids are described from the outcrop belt of the Elm Point, Winnipegosis, Dawson Bay, and Souris River Formations in Manitoba. The Elm Point Formation contains a fauna of stromatoporellids of Eifelian age that is characterized by the new species,Stromatoporella manitobaensis.The Winnipegosis stromatoporoids are dolomitized but the widespread speciesActinostroma tyrrelli, Taleastroma logansportenseand the new speciesTrupetostroma imbrexcan be recognized in this Givetian assemblage. The Dawson Bay fauna is characterized by the appearance of the dendroid forms,StachyodesandDendrostromaand species ofHermatostroma, Trupetostroma, andParallelopora.A species ofActinostroma, comparable toA. filitextumis the most abundant stromatoporoid in the Dawson Bay Formation. The Souris River fauna, referred to as theArctostroma contextumassemblage, is widespread at the Givetian-Frasnian boundary. Elements occur elsewhere in western Canada in the Beaverhill Lake, Waterways, lower Duperow and lower Fairholme units. Stromatoporoids in these four assemblages are relatively restricted in their stratigraphic occurrence and sufficiently widespread in their distribution to be useful in correlation.
On Candinia (Sacoglossa: Juliidae), a new fossil genus of bivalved gastropods
Authors: Renard Jacques Le , Sabelli Bruno , Taviani Marco
Published: August 2016

The record of the fossil representatives of the family Juliidae is updated. The new genus Candinia is proposed, in the subfamily Juliinae, for two fossil species somewhat intermediate between Julia and Berthelinia. The new species Candinia pliocaenica is recorded from the lower Pliocene shallow marine deposits near Siena (Tuscany, Italy). This is the first record of Sacoglossa in the Mediterranean Basin. Based on the very specialized life habits of the Juliidae, it is suggested that subtropical Caulerpa algal prairies inhabited the Mediterranean during the early Pliocene, likely becoming extinct in this basin because of the mid-Pliocene climatic deterioration.
Redescription of the ichnospecies Antipus flexiloquus Hitchcock, from the Early Jurassic of the Connecticut Valley
Authors: Coombs Walter P.
Published: August 2016

Many ichnological taxa named by Edward Hitchcock have never been adequately described and illustrated. Among these is the ichnogenus Antipus Hitchcock (1858, p. 115) with two species: A. flexiloquus based on specimens AC (=Amherst College, Amherst, Massachusetts) 35/25 and AC 41/52 (designated the type specimen by Lull 1904, p. 536); and A. bifidus based on specimens AC 23/3, AC 17/2, and AC 23/2 (designated the type specimen by Hitchcock 1865, p. 56). Lull (1904, p. 536) regarded A. bifidus as “… extremely doubtful…” and did not consider it in later publications (e.g., Lull 1915, 1953). The impressions ascribed to A. bifidus might be organic in origin, but if they are trackways, they are totally unlike the tracks of A. flexiloquus. Antipus bifidus is here regarded a nomen dubium because it is undiagnostic. Referred specimen AC 35/25, a small, thin slab of micaceous shale (approximately 87 mm by 96 mm, less than 2 mm thick) that is not mentioned by Lull (1904, 1915, 1953), has one manus and possibly one pes track of such poor quality that analytic comparison to the type of A. flexiloquus is impossible. Therefore, the ichnogenus Antipus has a single species, A. flexiloquus, known only from the type specimen, AC 41/52. Two of the eleven tracks on AC 41/52 have been illustrated (Hitchcock 1858, plate 20, fig. 10; republished with minor revision by Lull 1915, fig. 117; these two tracks are here designated M2 and P4). These simple outline sketches do not accurately portray details of the tracks, and the full trackway pattern was not illustrated.
The micromorphic articulate brachiopod Gwynia from the western approaches, UK
Authors: Harper David A. T. , Donovan Stephen K. , Veltkamp Cornelis J.
Published: August 2016

The micromorphic brachiopod genus Gwynia was established by William King (1859) on the basis of specimens described by Gwyn Jeffreys (1859) from the coast of Normandy and Belfast Lough. Additional, unpublished records of the genus from Larne and Portrush, collected by Dickie, Hyndman and Waller during the 1850s, were the last sightings of the taxon around Ireland (Massy, 1925). Despite the distinctive characteristics of the genus, Davidson (1861, p. 39) considered it had yet to be sufficiently determined whereas others (see Brunton and Curry, 1979, p. 46) have suggested the genus may be an immature form of Argyrotheca cistellula (Searles-Wood) with which Gwynia often co-occurs. However, that species is consistently transverse with marked exopunctae.
Hydrospire meshwork of the Carboniferous Blastoid Pentremites Say
Authors: Beaver Harold H.
Published: August 2016

Unusual preservation of blastoid hydrospire meshwork in a single Mississippian specimen was described by Beaver (1981). Examination of additional specimens from different stratigraphic units has revealed other specimens of Mississippian age showing the same hydrospire meshwork.
A new otarionine trilobite from the Henryhouse Formation (Silurian, Ludlow) of Oklahoma
Authors: Adrain Jonathan M.
Published: August 2016

Cyphaspis wessmani new species is a morphologically aberrant taxon from the Ludlow Henryhouse Formation of south-central Oklahoma. Its long, scoop-shaped cephalic border is without close comparison in the family Aulacopleuridae, but its possession of eleven thoracic segments with an axial spine on the sixth, an inflated glabella with tiny L1 and dorsal tuberculate sculpture, a prominently expressed bilobate eye socle, and a micropygous pygidium all support assignment to Cyphaspis. The genus is common in Silurian rocks from most parts of the world, but C. wessmani is the first published record from southern Laurentia.
Conodonts, stratigraphy, and relative sea-level changes of the Tribes Hill Formation (Lower Ordovician, east-central New York)
Authors: Landing Ed , Westrop Stephen R. , Knox Leanne A.
Published: August 2016

Tremadocian onlap is recorded by the Tribes Hill Formation. The formation is a lower Lower Ordovician (upper conodont Fauna B Interval(?)-Rossodus manitouensisZone) depositional sequence that unconformably overlies the Upper Cambrian Little Falls Formation.

Depositional environments and stratigraphy indicate that the Tribes Hill was deposited on a wave-, not tide-, dominated shelf and that a uniform, “layer-cake” stratigraphy is present. The deepening-shoaling sequence of the Tribes Hill includes the: 1) Sprakers Member (new; peritidal carbonate and overlying tempestite limestone and shale); 2) Van Wie Member (new; subtidal shale and limestone); 3) Wolf Hollow Member (revised; massive carbonates with thrombolitic cap); and 4) Canyon Road Member (new; glauconitic limestone and overlying evaporitic dolostone). The shoaling half-cycle of the Tribes Hill is older than a shoaling event in western Newfoundland, and suggests epeirogenic factors in earliest Ordovician sea-level change in east Laurentia. Conodont and trilobite biofacies track lithofacies, andRossodus manitouensisZone conodonts andBellefontiaBiofacies trilobites appear in the distal, middle Tribes Hill Formation.

Twenty-four conodont species are illustrated.Ansella?protoserratanew species,Iapetognathus sprakersinew species,Leukorhinion ambonodesnew genus and species, andLaurentoscandodusnew genus are described.
Pteropods (Mollusca, Gastropoda) from the Pliocene Miyazaki Group, Miyazaki Prefecture, Japan
Authors: Ujihara Atsushi
Published: August 2016

Twenty-four species of pteropods are described from the Pliocene Miyazaki Group in the Tsuma-Takanabe district, Miyazaki Prefecture, southwest Japan. Five are new:Clio shibatainew species,Cuvierina miyazakiensisnew species,Cavolinia floridana japonicanew subspecies,C. itoigawainew species, andC. vendryesiana hyugaensisnew subspecies.

The pteropod fauna of the two lower members of the Miyazaki Group consists largely of extinct species. Whereas more than one-half of the species of the two upper members are extant.

Twelve species,Limacinasp.,Clio hataii(Noda, 1972),C. shibatainew species,Cuvierina miyazakiensisnew species,Bowdenatheca?sp.,Diacria digitatasubsp. indet.,Cavolinia floridana japonicanew subspecies,C.cf.C. gypsorum(Bellardi, 1873),C. itoigawainew species,C. mexicana(Collins, 1934),C. rattoneiSimonelli, 1896, andC. vendryesiana hyugaensisnew subspecies seem to serve as good index fossils for the Pliocene.
A new crab (Brachyura: Cancridae) from lower Miocene rocks of the northwestern Olympic Peninsula, Washington
Authors: Berglund Ross E. , Goedert James L.
Published: August 2016

Lower Miocene rocks of the uppermost part of the Pysht Formation and the overlying Clallam Formation on the Olympic Peninsula, Washington have yielded rare fossils of a small crab, Cancer (Metacarcinus) starri, new species. This is the second lower Miocene record of the genus Cancer and the oldest of the subgenus Metacarcinus.
Jamaican Cretaceous Crinoidea
Authors: Donovan Stephen K. , Milsom Clare V. , Veltkamp Cornelis J.
Published: August 2016

Jamaica has the best-known fauna of fossil crinoids of the Antillean islands. Two Cretaceous species have been reexamined on the basis of new material. Lower Cretaceous Apiocrinites sp., previously referred to Austinocrinus n. sp. and first documented from a short pluricolumnal, is now known from brachials and further fragments of column. This is the first millericrinid, and only the second non-isocrinid stalked crinoid, to be identified from the Jamaican and Antillean fossil record. Other ossicles may be derived from the cirri of a comatulid. Applinocrinus cretacea (Bather) is well known from the upper Senonian of England, North America and the West Indies, although Caribbean specimens have not been figured previously. Functional interpretations of the mode of life of Applinocrinus suggest that it was a benthic crinoid, presumably with arms. It lived embedded in the sediment.
Marocella: Antarctic specimens of an enigmatic Cambrian animal
Authors: Evans K. R.
Published: August 2016

Remarkably well-preserved specimens ofMarocellaGeyer, 1986, from the Lower Cambrian Shackleton Limestone of Antarctica show that although affinity with chondrophorine cnidarians is improbable, its rigid caplike shell also is unlike that of any known mollusk. Association with sclerite-bearing taxa cannot be ruled out, but at present the phylogenetic affiliation of the genus remains equivocal.
Melanosclerites: first North American report of these problematic microfossils and discussion of their affinity
Authors: Cashman P. B.
Published: August 2016

Melanosclerites are rod-shaped, pseudochitinous microfossils of problematic affinity. They have not been widely studied. The first North American discovery of melanosclerites is here reported; Melanostylus coronifer and Melanosteus acutus (the latter with two subspecies), of Devonian (Late Siegenian) age, were discovered in the Indian Cove Formation of the Upper Gaspé Limestones from the Gaspé Peninsula, Quebec, Canada.

These melanosclerites bear a strong resemblance to the modern cubomedusa polyp Carybdea alata and the planula stages of the hydrozoan Pennaria tiarella. They are interpreted as being the embryonic planula and early polyp stages of scyphozoans, cubozoans, and hydrozoans.

Consequently, Semenola semen Schallreuter, 1981, is considered an early growth stage of M. acutus anceps and thus a junior synonym; similarly, Eichbaumia incus is a junior synonym of Melanostylus coronifer; while, on the basis of their three-fold symmetry, Orthopelta? femuralis Eller, 1945, and Menola os Schallreuter, 1981, are treated as junior synonyms of Melanofurca neptuni Eisenack, 1963. Melanosclerites could represent the planula and polyp stages of any of the three classes of Cnidaria; therefore, the order Melanoscleritoitidea Eisenack, 1963, and the family Melanoscleritoitidae are here rejected because the supposed family crosses the boundaries of classes. The new subspecific combinations Melanosteus acutus acutus, M. acutus filiformis, and M. acutus anceps are proposed, their diagnoses being emended; the diagnosis of Melanostylus coronifer is also emended.

Melanosclerites appear to be strongly facies controlled and thus may have potential for paleoenvironmental and paleogeographical reconstructions.
Dizygocrinus: Mississippian camerate crinoid (Echinodermata) from the midcontinental United States
Authors: Ausich William I. , Kammer Thomas W.
Published: August 2016

The Mississippian crinoid genusDizygocrinusis revised, and the phylogeny is inferred. Eleven species are recognized, includingD. biturbinatus(Hall),D. indianaensis(Lyon and Casseday),D. caroli(Hall),D. whitei(Wachsmuth and Springer),D. originarius(Wachsmuth and Springer),D. montgomeryensis(Worthen),D. gorbyi(Miller),D. venustus(Miller),D. peculiaris(Miller and Gurley),D. mutabilis(Wachsmuth and Springer), andD. cantonensis(Wachsmuth and Springer). Nomenclatoral revisions include recognition ofD. gorbyiandD. peculiarisas valid species and designation of the following as junior synonyms:D. calvus, D. crawfordsvillensis, D. intermedius, D. mediocris, andD. somersetensis. Dizygocrinusis now recognized from both the late Osagean and Meramecian on both the eastern and western margins of the Illinois Basin.

Dizygocrinusis first recognized virtually simultaneously on both the eastern and western margins of the Illinois Basin. Migration proceeded in both directions, but was most common later in the history of the genus. The principal radiation on the western basin margin was among species with generally smooth aboral cup plates, whereas on the eastern margin sculptured species account for the principal species radiation.
Another tyrannosaurid dinosaur from the Cretaceous of Northwest New Mexico
Authors: Archer Brad , Babiarz John P.
Published: August 2016

In the November 1990 (Vol. 64, no. 6) issue of the Journal of Paleontology, Lehman and Carpenter described an Aublysodon, which at the time was believed to be the most complete Carnosaur known from the Upper Cretaceous Kirtland Shale of northwestern New Mexico. Recently, a more complete specimen, considered to be a tyrannosaurid dinosaur on the basis of a proximally constricted third metatarsal and a partial D-shaped (in cross section) premaxillary tooth (Molnar, 1990), has been brought to the attention of the Museum of Geology at Arizona State University by an amateur paleontologist who recognized its scientific importance after obtaining it from an individual in New Mexico. The remains of this dinosaur, collected in northwestern New Mexico sometime in late 1989 or early 1990 by unknown persons, include both cranial and skeletal material (Figure 1.1).
Lectotype of Phacops rana milleri Stewart, 1927 (Trilobita, Devonian of Ohio)
Authors: Babcock Loren E.
Published: August 2016

The trilobite Phacops rana var. milleri Stewart, 1927, was based on five specimens collected from the Silica Shale (Middle Devonian) in a quarry formerly owned by the Sandusky Cement Company, near Silica, Lucas County, Ohio. The “cotypes” (=syntypes of modern terminology) were catalogued as number 16266 in the Orton Geological Museum of The Ohio State University. Study of specimens in the OSU collection reveal four extant syntypes belonging to two subspecies of Phacops rana (Green, 1832). Three complete specimens and one separate eye are represented. A cephalon mentioned by Stewart (1927, p. 59) is missing and presumed lost. Of the extant specimens, three belong to P. rana milleri and one belongs to P. rana crassituberculata Stumm, 1953.
Silurian acastacean trilobites of the Americas
Authors: Edgecombe Gregory D.
Published: August 2016

Species of the superfamily Acastacea constitute a minor element of North and South American Silurian trilobite faunas. Phacopidina? obsoleta (Ulrich and Delo) (Llandovery, Tennessee) provides the sole Silurian record of the “kloucekiine” grade (Acastacea s.l.); a lectotype is designated for this species. Acaste birminghamensis Norford (mid Llandovery, Alabama) lacks synapomorphies of post-Llandovery Acastidae s.s. (=Acastinae + “Acastavinae” + Asteropyginae), and is the basis for Llandovacaste n. gen. (Acastidae s.l.). A well-preserved sample of Andinacaste cf. A. ledgrandi Eldredge and Braniša from the Catavi Formation (Ludlow–Přídolí), Bolivia, displays apomorphic characters of the genal spines and hypostome shared with Devonian calmoniids. Coaptative structures, including vincular furrow/pits and “bifurcated” thoracic pleural tips, are documented for Andinacaste; similar enrollment morphologies arose in other acastomorph calmoniids. Poorly known Llandovery acastaceans from Paraguay and Venezuela may represent Andinacaste. Acaste zerinae n. sp. from the Pembroke Formation (Přídolí) of Maine is closely comparable to British late Wenlock A. downingiae (Murchison). The Australian Gedinnian acastine placed in Phacopinae indet. longisulcata (Shergold) is designated Acaste lokii n. sp.
A New World occurrence of Notidanodon lanceolatus (Chondrichthyes, Hexanchidae) and comments on hexanchid shark evolution
Authors: Long Douglas J. , Murphy Michael A. , Rodda Peter U.
Published: August 2016

Notidanodon lanceolatus Woodward is reported from Late Aptian strata of northern California. This specimen, the oldest fossil cow shark (Hexanchidae) in the New World, greatly extends the geographic distribution of this species and confirms the eurytopic distribution of this genus. We suggest that cow shark teeth evolve in an orderly sequence in which the mesial edge of the tooth is at first smooth (Notidanus muensteri), then serrate (Notidanus serratus, Notorynchus aptiensis), and finally dentate (Notidanodon lanceolatus).
Report of the Secretary
Authors: Wolberg Donald L.
Published: August 2016

The responsibilities of Secretary of this Society bring with them an opportunity to interact with the membership and the public. It is a job that offers a unique perspective on the profession and a general perception of the profession. There is no doubt but that a high level of interest in paleontology is present “out there” in the real world and people are interested in fossils. I continue to receive many, many requests for our educational brochures and there has been a surprising number of requests for membership information in the Society by people for whom paleontology is an avocation.
Presentation of the Charles Schuchert Award of The Paleontological Society to Stephen J. Culver
Authors: Buzas Martin A.
Published: August 2016

Stephen J. Culver was born, nurtured, and educated in the United Kingdom. Both his bachelor's and doctoral degrees are from the University of Wales, Swansea, where he had the good fortune to study with the eminent micropaleontologist Fred Banner. Jobs for paleontologists are, evidently, perennially scarce, and in 1976 when he earned his Ph.D., he was unemployed. Consequently, he began his career by driving a lorry. Fortunately for all of us, he quickly learned that his training did not uniquely qualify him for this endeavor. Within a year he secured a post as Lecturer in Geology at the University of Sierra Leone.
Wewokella and other sponges from the Pennsylvanian Minturn Formation of north-central Colorado
Authors: Rigby J. Keith , Church Stephen B.
Published: August 2016

The calcareous heteractinid sponge Wewokella solida Girty, 1911, is reported from Colorado for the first time. Triactine-based skeletons are well preserved and dermal and gastral layers are composed of smaller spicules than those in the main wall of the many specimens. A fragment of an unnamed demosponge, possibly related to Heliospongia Girty, 1908, and fragments of root tufts occur with Wewokella in the Middle Pennsylvanian Minturn Formation near McCoy, in Eagle County, Colorado.
A new Unionoidea (Mollusca, Bivalvia) from the Tacuarembó Formation (Upper Triassic–Upper Jurassic), Uruguay
Authors: Martinez Sergio , Figueiras Alfredo , da Silva Jorge S.
Published: August 2016

A new genus and species of Unionoidea, Tacuaremboia caorsii, are described from the Tacuarembó Formation (Upper Triassic–Upper Jurassic) of Uruguay. The genus is distinguished from other Unionoidea by its large size, thickness, edentulous hingeline, and the presence of claustra. It has some similarities with the Anodontinae and the Archanodontacea, but it cannot be assigned to any of the known family units.
The nonmarine mollusks of the late Oligocene–early Miocene Cabbage Patch fauna of western Montana III. Aquatic mollusks and conclusions
Authors: Pierce Harold G.
Published: August 2016

The aquatic molluscan fauna of the late Oligocene–early Miocene Cabbage Patch beds of western Montana includes eight taxa, six of which are new at specific or subspecific level,Sphaerium bakeri, Valvata paula, Planorbula powelli, Biomphalaria haydeni, Lymnaea tumere, andLymnaea vetusta ambigua.Two are referred to previously known taxa,Viviparus nanusandLymnaea shumardi.The generaBiomphalaria, Planorbula, andViviparusno longer occur in western Montana, nor in the Columbia River drainage.Planorbula powelliis the earliest unequivocalPlanorbulafrom North America. Of the 18 supraspecific taxa of this molluscan fauna, eight (44%) are now displaced, all but one to the east and/or south. Climatic interpretations derived from modern habitats of the generaBiomphalariaandPolygyroideasuggest a late Oligocene–early Miocene Mean Annual Temperature of 10°C, with January means not less than 5°C, and July means about 15°C. Environmental analysis suggests a subhumid to subarid shrub and grassland vegetation similar to modern environments with > 50 cm Mean Annual Precipitation, surrounding marshy shallow lakes subject to seasonal desiccation. Effective moisture varied from slightly greater than the present for the late Oligocene to a latest Oligocene pluvial interval followed by subarid conditions for the early Miocene. Geographically, the drainage of this area was into a closed and isolated basin during the late Oligocene–early Miocene. Molluscan assemblages are found to support the tripartite division of the Cabbage Patch beds that has been based on mammals and should be useful in correlation between basins.
Crushing strength ofPuriana pacifica(Ostracoda), an experimental approach to taphonomy
Authors: Kaesler Roger L. , Kontrovitz Mervin , Taunton Stefanie
Published: August 2016

Specimens of the ostracode speciesPuriana pacificaBenson, 1959, from a modern assemblage from the Gulf of California can be sorted by visual inspection into five groups based on taphonomic condition. Characteristics used for sorting include: presence or absence of appendages; color and opacity of the valves; and evidence of abrasion, fragmentation, and boring. As measured by resistance to crushing force, members of the five groups show appreciable, progressive, postmortem weakening so that specimens in the poorest apparent condition are the weakest mechanically. The groups also differ in style of fracturing in response to crushing force. Fractures of valves of the freshest specimens are located quite consistently. Among specimens with progressively more damage, the location of fractures becomes less predictable. On valves of the most damaged specimens, typical fractures are short and likely to occur almost anywhere on the valve. These experimental results emphasize the importance of rapid burial in enhancing the likelihood of fossilization. Furthermore, they cast doubt on the ability of paleoecologists to use valves and carapaces of fossil ostracodes to interpret levels of wave and current energy in ancient environments because taphonomic weakening and subsequent destruction may effectively mask functional morphology.
Carnivora and Creodonta of the Calf Creek Local Fauna (Late Eocene, Chadronian), Cypress Hills Formation, Saskatchewan
Authors: Bryant Harold N.
Published: August 2016

The Mammalia from the Calf Creek Local Fauna, Cypress Hills Formation, Saskatchewan, include various Carnivora (197 specimens) and Creodonta (nine specimens). Most specimens are isolated teeth. The fauna includesDaphoenussp.,Daphoenocyon dodgei, daphoenine sp.,Parictis parvus, Parictissp., nimravid spp.,Hesperocyon gregarius, Hemipsalodon grandis, Hyaenodon horridus, H. microdon, Hyaenodonspp., and indeterminate taxa. Most of the large number of deciduous teeth are referred toHesperocyonor the Daphoeninae.Daphoenus canadensis, Russell, 1934, is a junior synonym ofDaphoenocyon dodgei.Upper molars are tentatively referred toP. parvus; the geographic range ofP. parvusis extended to include Saskatchewan and Wyoming. The Calf CreekHesperocyonclosely resembles samples of the genus from Pipestone Springs Local Fauna, Montana, and most levels at Flagstaff Rim, Wyoming. Most of the previously described Carnivora and Creodonta from Cypress Hills localities can be referred to species that occur in the Calf Creek Local Fauna. The Carnivora and Creodonta are consistent with an early to medial Chadronian age for this local fauna and suggest a relatively early age within that interval.
A new subgenus of neritid gastropod from the Upper Cretaceous of Baja California, Mexico
Authors: Squires Richard L.
Published: August 2016

Numerous specimens of the neritid gastropod Nerita (Bajanerita) n. subgen. californiensis (White, 1885) are present in the Upper Cretaceous Rosario Formation at Punta Banda, Baja California, Mexico (Figure 1). Marincovich (1975) assigned these strata to a Late Campanian to Early Maastrichtian age. The strata contain extensive biostromal deposits of the caprinid rudistid bivalve Coralliochama orcutti White, 1885, that probably lived below mean wave base in a shallow-water, low-energy environment periodically affected by storm waves or currents (Marincovich, 1975). The nearby shoreline was apparently defined by steep wave-washed bedrock cliffs and local pocket beaches that formed along the margin of a forearc basin (Yeo, 1984). Scattered about in the sandstone matrix among the rudistid remains are the small-sized specimens of N. (B.) californiensis, which commonly weather out as resistant, complete shells on the surface of the rock. Saul (1970) concluded that the neritid and other shallow-water gastropods at Punta Banda accumulated in sediment-trapping depressions within the Coralliochama buildups. These gastropods had originally roamed over the algal pastures of these buildups. The color patterns preserved on many of the specimens of N. (B.) californiensis also provide evidence that the depth of water was shallow and within the photic zone. Furthermore, Sohl (1971) reported that Campanian and Maastrichtian gastropod assemblages of the Baja California region are mostly associated with rudist buildups, and warm-water rocky intertidal neritids are among the dominant faunal elements. Lowenstam and Epstein (1959), using oxygen-isotope studies of an ammonite, suggested that the Punta Banda rudistids lived at a marginally tropical temperature of about 19°C.