PBDB Collection

USNM703, Old Word Ranch, Glass Mountains: Roadian, Texas

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Demospongiae - Agelasida - Guadalupiidae

	Guadalupia cupulosa Finks 2010	Finks 2010
Polyplacophora - Neoloricata - Lepidopleuridae

	Pterochiton arthurcooperi Smith 1976	Smith 1976	18 specimens
	recombined as Schematochiton arthurcooperi
	2 Head valves, 1 Intermediate valves,5 Tail valves
Gastropoda - Murchisoniina - Lophospiridae

	Manzanospira carinata Batten 1989	Batten 1989	1 specimen

	Manzanospira manzanicum (Girty 1909)	Batten 1989	1 specimen

	Manzanospira wordensis n. sp. Batten 1989	Batten 1989	1 specimen
	(1 measurement)

	Worthenia multilineata Batten 1989	Batten 1989	17 specimens
	recombined as Biarmeaspira multilineata

	Worthenia arizonensis Winters 1963	Batten 1989	2 specimens
	recombined as Biarmeaspira arizonensis
Gastropoda - Murchisoniina - Soleniscidae

	? Labridens sp. Yochelson 1956	Erwin 1988	1 individual
	(1 measurement)

	Labridens shupei Yochelson 1956	Erwin 1988	2 individuals

	Cylindritopsis insolitus (Chronic 1952)	Erwin 1988	19 individuals
Gastropoda - Murchisoniina - Eotomariidae

	Spiroscala pulchra n. sp. Batten 1958	Batten 1958	2 specimens
	(1 measurement)

	Euconospira pulchra Batten 1958	Batten 1958	4 specimens
	replaced by Spiroscala quasipulchra
Gastropoda - Murchisoniina - Phymatopleuridae

	Tapinotomaria submirabilis n. sp. Batten 1958	Batten 1958	4 specimens
	(1 measurement)

	Tapinotomaria crassa Batten 1958	Batten 1958	5 specimens

	Tapinotomaria duplicostata n. sp. Batten 1958	Batten 1958	2 specimens
	(1 measurement)

	Tapinotomaria rugosa Batten 1956	Batten 1958	1 specimen
	(3 measurements)

	Tapinotomaria costata Batten 1958	Batten 1958	4 specimens

	Eirlysia exquisita Batten 1956	Batten 1958	2 specimens

	Eirlysia reticulata Batten 1958	Batten 1958	12 specimens

	Callitomaria stanislavi Batten 1956	Batten 1958	1 specimen

	Callitomaria magna n. sp. Batten 1958	Batten 1958	6 specimens
	(4 measurements)

	Worthenia tabulata (Conrad 1835)	Batten 1989	4 specimens
	(1 measurement)

	Worthenia bicarinata n. sp. Batten 1989	Batten 1989	1 specimen
	(1 measurement)

	Worthenia bialveozona Batten 1989	Batten 1989	25 specimens

	Worthenia alticarinata Batten 1989	Batten 1989	1 specimen

	Worthenia corrugata Chronic 1952	Batten 1989	3 specimens

	Lamellospira conica Batten 1958	Batten 1958	7 specimens

	Lamellospira cincta n. sp. Batten 1958	Batten 1958	1 specimen
	(1 measurement)

	Discotomaria costata Batten 1958	Batten 1958	3 specimens
Gastropoda - Murchisoniina - Porcelliidae

	Hesperiella permianus Batten 1989	Batten 1989	1 specimen
Gastropoda - Murchisoniina - Gosseletinidae

	Callistadia bella Knight 1945	Batten 1989	3 specimens

	Glyptotomaria (Glyptotomaria) pistra Batten 1958	Batten 1958	1 specimen
	recombined as Dictyotomaria pistra

	Ananias ootomaria Batten 1989	Batten 1989	27 specimens
	(2 measurements)

	Ananias labrectus Batten 1989	Batten 1989	26 specimens
	(6 measurements)

	Glabrocingulum (Glabrocingulum) diablo Batten 1989	Batten 1989	1 specimen

	Glabrocingulum (Glabrocingulum) alveozonum Batten 1989	Batten 1989
	recombined as Glabrocingulum alveozonum
	(1 measurement)

	Glabrocingulum (Glabrocingulum) coronatum (Chronic 1952)	Batten 1989	68 individuals
	original and current combination Glabrocingulum coronatum

	Shwedagonia elegans Batten 1956	Batten 1958	3 specimens

	Lacunospira altsia Batten 1958	Batten 1958	10 specimens
	(1 measurement)

	Baylea cf. supercrenata (Weller 1929)	Batten 1989	1 specimen
	(1 measurement)

	Peruvispira delicata Chronic 1949	Batten 1989	14 specimens

	Apachella nodosa Batten 1989	Batten 1989	9 specimens

	Apachella turbiniformis Winters 1963	Batten 1989	2 specimens
	(1 measurement)

	Apachella huecoensis Batten 1989	Batten 1989	1 specimen
	(1 measurement)

	Apachella exaggerata Batten 1989	Batten 1989	11 specimens

	Apachella pseudostrigillata (Girty 1934)	Batten 1989	1 specimen
	(1 measurement)

	Apachella translirata Winters 1956	Batten 1989	3 specimens
Gastropoda - Murchisoniina - Ischnoptygmatidae

	Ischnoptygma valentinei n. sp. Erwin 1988	Erwin 1988	10 individuals
	(1 measurement)

	Ischnoptygma archibaldi n. sp. Erwin 1988	Erwin 1988	85 individuals
	(2 measurements)
Gastropoda - Liotiidae

	Brochidium morrisi Yochelson 1956	Yochelson 1956	2 specimens

	Dichostasia complex Yochelson 1956	Yochelson 1956	1 specimen
	(1 measurement)
Gastropoda - Meekospiridae

	Ceraunocochlis deformis Erwin 1988	Erwin 1988	1 individual

	Ceraunocochlis elongata Erwin 1988	Erwin 1988	1 individual
Gastropoda - Goniasmatidae

	Platyzona anguispira Batten 1989	Batten 1989	1 specimen
Gastropoda - Cyrtoneritida - Orthonychiidae

	Platyceras (Orthonychia) informal sp. 2 (Hall 1843)	Yochelson 1956	1 specimen
	original and current combination Orthonychia

	Platyceras (Orthonychia) sp. (Hall 1843)	Yochelson 1956	4 specimens
	original and current combination Orthonychia
Gastropoda - Cycloneritida - Neritopsidae

	Byzantia n. gen. obliqua Kosnik 1997	Kosnik 1997	12 individuals
Gastropoda - Bellerophontida - Bellerophontidae

	Knightites (Retispira) modesta (Girty 1909)	Yochelson 1960	67 specimens
	recombined as Retispira modesta
	(3 measurements)

	Bellerophon (Bellerophon) plummeri n. sp. Yochelson 1960	Yochelson 1960	11 specimens
	recombined as Waagenella plummeri
	(5 measurements)

	Bellerophon (? Pharkidionotus) sp. de Montfort 1808	Yochelson 1960	1 specimen

	Bellerophon (Bellerophon) deflectus (Chronic 1952)	Yochelson 1960	2 specimens
	original and current combination Bellerophon deflectus

	Bellerophon (Bellerophon) hilli n. sp. Yochelson 1960	Yochelson 1960	19 specimens
	(7 measurements)
Gastropoda - Bellerophontida - Euphemitidae

	Euphemites aequisulcatus Chronic 1952	Yochelson 1960	29 specimens
	(6 measurements)

	Euphemites crenulatus n. sp. Yochelson 1960	Yochelson 1960	4 specimens
	(1 measurement)

	Euphemites imperator n. sp. Yochelson 1960	Yochelson 1960	1 specimen
	(1 measurement)

	Warthia welleri Yochelson 1960	Yochelson 1960	8 specimens
	(1 measurement)

	Warthia fissus Yochelson 1960	Yochelson 1960	1 specimen
	(1 measurement)
Gastropoda - Naticopsidae

	Colpites striata Batten 1989	Batten 1989	14 specimens
Gastropoda - Euomphalina - Microdomatidae

	Glyptospira cingulata Erwin 1988	Erwin 1988	44 individuals
	(7 measurements)
Gastropoda - Euomphalina - Pseudophoridae

	Sallya linsa Yochelson 1956	Yochelson 1956	7 specimens
	(3 measurements)

	Sallya striata Yochelson 1956	Yochelson 1956	2 specimens
	(2 measurements)
Gastropoda - Euomphalina - Euomphalidae

	Straparollus (Euomphalus) kaibabensis (Chronic 1952)	Yochelson 1956	35 specimens
	original and current combination Euomphalus kaibabensis
	(7 measurements)

	Straparollus (Euomphalus) levicarinatus Yochelson 1956	Yochelson 1956	2 specimens

	Discotropis sulcifer (Girty 1908)	Yochelson 1956	7 specimens
	(2 measurements)
Gastropoda - Euomphalina - Omphalotrochidae

	Babylonites turritus Yochelson 1956	Yochelson 1956	1 specimen
Gastropoda - Euomphalina - Anomphalidae

	Anomphalus studiosus Yochelson 1956	Yochelson 1956	1 specimen
	(1 measurement)

	Diploconula biconvexa Yochelson 1956	Yochelson 1956	21 specimens
	(5 measurements)
Bivalvia - Trigoniida - Schizodidae

	Eoastarte subcircularis Ciriacks 1963	Newell and Boyd 1975
	(3 measurements)

	Schizodus texanus Clifton 1942	Newell and Boyd 1975

	Schizodus canalis Branson 1930	Newell and Boyd 1975
Bivalvia - Trigoniida - Trigoniidae

	Lyroschizodus orbicularis Newell and Boyd 1975	Newell and Boyd 1975
	(4 measurements)
Bivalvia - Trigoniida - Costatoriidae

	Procostatoria cooperi Newell and Boyd 1975	Newell and Boyd 1975
	(1 measurement)
Bivalvia - Grammysiidae

	Cardiomorpha sp. de Koninck 1844	Runnegar and Newell 1974
Bivalvia - Pholadomyida - Edmondiidae

	Scaldia sp. de Ryckholt 1847	Runnegar and Newell 1974
Bivalvia - Pectinida - Pseudomonotidae

	Prospondylus acinetus Newell and Boyd 1970	Newell and Boyd 1970
	(1 measurement)
Bivalvia - Pectinida - Deltopectinidae

	Cyrtorostra varicostata Branson 1930	Newell and Boyd 1995
Bivalvia - Pectinida - Annuliconchidae

	Annuliconcha dentata Newell and Boyd 1995	Newell and Boyd 1995
Bivalvia - Pectinida - Heteropectinidae

	Cassianoides n. gen. kingorum Newell and Boyd 1995	Newell and Boyd 1995

	Girtypecten sublaqueatus (Girty 1908)	Newell and Boyd 1995
Bivalvia - Pectinida - Streblochondriidae

	Eocamptonectes papillatus (Girty 1908)	Newell and Boyd 1995

	Streblopteria montpelierensis (Girty 1910)	Newell and Boyd 1995
	original and current combination Aviculipecten montpelierensis
Bivalvia - Pectinida - Entoliidae

	Pernopecten yini Newell and Boyd 1995	Newell and Boyd 1995
Bivalvia - Pectinida - Euchondriidae

	Euchondria cooperi Newell and Boyd 1995	Newell and Boyd 1995
	(1 measurement)
Cephalopoda - Nautilida - Grypoceratidae

	? Domatoceras sp. Hyatt 1891	Miller 1945
	= ? Stearoceras sp. Hyatt 1893	Miller and Youngquist 1949
Cephalopoda - Goniatitida - Agathiceratidae

	Agathiceras sp. Gemmellaro 1887	Cooper and Grant 1977
Cephalopoda - Goniatitida - Adrianitidae

	? Adrianites sp. Gemmellaro 1887	Miller 1945
	(1 measurement)

	Neocrimites sp. Ruzhentsev 1940	Cooper and Grant 1977
Cephalopoda - Goniatitida - Perrinitidae

	Perrinites hilli (Smith 1903)	Miller 1945
Cephalopoda - Goniatitida - Paragastrioceratidae

	Pseudogastrioceras cooperi n. sp. Miller 1945	Miller 1945
	recombined as Altudoceras cooperi
	(1 measurement)
Cephalopoda - Goniatitida - Vidrioceratidae

	Stacheoceras normani n. sp. Miller and Furnish 1957	Miller and Furnish 1957
	recombined as Glassoceras normani
	(1 measurement)

	Stacheoceras sp. Gemmellaro 1887	Miller 1945
	(1 measurement)
Cephalopoda - Prolecanitida - Medlicottiidae

	Medlicottia whitneyi Böse 1919	Miller 1945
	recombined as Eumedlicottia whitneyi

	Propinacoceras sp. Gemmellaro 1887	Cooper and Grant 1977
Cephalopoda - Ceratitida - Paraceltitidae

	Paraceltites sp. Gemmellaro 1887	Cooper and Grant 1977
Cephalopoda - Pseudorthocerida - Pseudorthoceratidae

	Mooreoceras sp. Miller et al. 1933	Miller 1945
	synonym of Pseudorthoceras
Strophomenata - Productida - Lyttoniidae

	Eolyttonia sp. Frederiks 1924	Cooper and Grant 1977	VR category

	Collemataria sp. Cooper and Grant 1974	Cooper and Grant 1977	VR category

	? Pseudoleptodus giganteus Cooper and Grant 1974	Cooper and Grant 1977	VR category
Strophomenata - Productida - Cyclacanthariidae

	Cyclacantharia paucispinosa Cooper and Grant 1975	Cooper and Grant 1977	VR category
Strophomenata - Productida - Hercosiidae

	Hercosestria cribrosa Cooper and Grant 1969	Cooper and Grant 1977	VR category
Strophomenata - Productida - Aulostegidae

	Xenosteges trivialis Cooper and Grant 1975	Cooper and Grant 1977	VR category

	Rhamnaria tenuispinosa Cooper and Grant 1975	Cooper and Grant 1977	R category
Strophomenata - Productida - Paucispiniferidae

	Paucispinifera costellata Cooper and Grant 1975	Cooper and Grant 1977	VR category
	(1 measurement)
Strophomenata - Productida - Linoproductidae

	Megousia auriculata Muir-Wood and Cooper 1960	Cooper and Grant 1977	R category

	Holotricharina hirsuta Cooper and Grant 1975	Cooper and Grant 1977	VR category

	Grandaurispina informal sp. 1 Muir-Wood and Cooper 1960	Cooper and Grant 1977	VR category
Strophomenata - Productida - Productellidae

	Echinauris sp. Muir-Wood and Cooper 1960	Cooper and Grant 1977	A category

	Echinauris lappacea Cooper and Grant 1975	Cooper and Grant 1977	R category

	Echinauris parva Cooper and Grant 1975	Cooper and Grant 1977	R category

	Echinauris bella Cooper and Grant 1975	Cooper and Grant 1977	R category

	Echinauris liumbona Cooper and Grant 1975	Cooper and Grant 1977	C category

	Kutorginella umbonata (Muir-Wood and Cooper 1960)	Cooper and Grant 1977	VR category
	original and current combination Retaria umbonata

	Rugatia incurvata (King 1931)	Cooper and Grant 1977	VR category
Strophomenata - Productida - Productidae

	Peniculauris costata Cooper and Grant 1975	Cooper and Grant 1977	VR category
Strophomenata - Productida - Echinoconchidae

	Waagenoconcha convexa Cooper and Grant 1975	Cooper and Grant 1977	C category

	Ametoria residua Cooper and Grant 1975	Cooper and Grant 1977	VR category
Strophomenata - Strophomenida - Rugosochonetidae

	Dyoros (Tetragonetes) solidus Cooper and Grant 1975	Cooper and Grant 1977	C category

	Dyoros (Dyoros) extensus Cooper and Grant 1975	Cooper and Grant 1977	VR category

	Chonetinetes angustisulcatus Cooper and Grant 1975	Cooper and Grant 1977	VR category
Strophomenata - Orthotetida - Meekellidae

	Meekella calathica Cooper and Grant 1974	Cooper and Grant 1977	VR category
Strophomenata - Orthotetida - Derbyiidae

	Derbyia laqueata Cooper and Grant 1974	Cooper and Grant 1977	VR category

	Derbyia complicata Cooper and Grant 1974	Cooper and Grant 1977	VR category

	Derbyia cincinnata Cooper and Grant 1974	Cooper and Grant 1977	VR category

	Derbyia informis Cooper and Grant 1974	Cooper and Grant 1977	R category
Strophomenata - Orthotetida - Schuchertellidae

	Goniarina sp. Cooper and Grant 1969	Cooper and Grant 1977	VR category
Rhynchonellata - Spiriferinida - Spiriferellinidae

	Metriolepis tegulata Cooper and Grant 1976	Cooper and Grant 1977	VR category
Rhynchonellata - Orthida - Schizophoriidae

	Acosarina mesoplatys (King 1931)	Cooper and Grant 1977	C category
Rhynchonellata - Spiriferida - Trigonotretidae

	Neospirifer bakeri (King 1931)	Cooper and Grant 1977	R category
	original and current combination Spirifer (Neospirifer) bakeri
	ssp. bakeri
Rhynchonellata - Spiriferida - Ambocoeliidae

	Crurithyris minutalis Cooper and Grant 1976	Cooper and Grant 1977	R category
	recombined as Cruricella minutalis
	(6 measurements)
Rhynchonellata - Spiriferida - Elythidae

	Neophricadothyris bullata Cooper and Grant 1976	Cooper and Grant 1977	R category
	recombined as Permophricodothyris bullata
Rhynchonellata - Athyridida - Neoretziidae

	Hustedia sp. Hall and Clarke 1893	Cooper and Grant 1977	R category

	Hustedia consuta Cooper and Grant 1976	Cooper and Grant 1977	R category

	Hustedia narinosa Cooper and Grant 1976	Cooper and Grant 1977	VR category

	Thedusia sp. Cooper and Grant 1976	Cooper and Grant 1977	VR category

	Thedusia mesocostata Cooper and Grant 1976	Cooper and Grant 1977	VR category
Rhynchonellata - Athyridida - Athyrididae

	Composita crassa Cooper and Grant 1976	Cooper and Grant 1977	VR category
Rhynchonellata - Terebratulida - Dielasmatidae

	Dielasma ellipsoideum Cooper and Grant 1976	Cooper and Grant 1977	VR category
Rhynchonellata - Rhynchonellida - Stenoscismatidae

	Stenoscisma sp. Conrad 1839	Cooper and Grant 1977	VR category

	Stenoscisma triquetrum Cooper and Grant 1976	Cooper and Grant 1977	VR category
Rhynchonellata - Rhynchonellida - Wellerellidae

	Phrenophoria planiventra Cooper and Grant 1976	Cooper and Grant 1977	VR category
	(1 measurement)

	Tautosia galbina Cooper and Grant 1976	Cooper and Grant 1977	VR category
Lingulata - Lingulida - Discinidae

	Roemerella gigantissima n. sp. Cooper and Grant 1974	Cooper and Grant 1977	VR category
	recombined as Gigadiscina gigantissima
	(2 measurements)
Trilobita - Proetida - Phillipsiidae

	Anisopyge cooperi n. sp. Brezinski 1992	Brezinski 1992
	(2 measurements)

	Vidria vespa Weller 1944	Brezinski 1992

	Delaria granti Brezinski 1992	Brezinski 1992

	Delaria chinatiensis Brezinski 1992	Brezinski 1992
see common names

Geography

Country:	United States	State/province:	Texas	County:	Brewster
Coordinates:	30.4° North, 103.1° West (view map)
Paleocoordinates:	1.4° North, 33.1° West
Basis of coordinate:	estimated from map
Geographic resolution:	outcrop

Time

Period:	Permian	Epoch:	Guadalupian
Stage:	Roadian	10 m.y. bin:	Permian 3
Key time interval:	Roadian
Age range of interval:	273.01000 - 266.90000 m.y. ago

Stratigraphy

Formation:	Road Canyon
Stratigraphic resolution:	group of beds
Stratigraphy comments: Upper part of Road Canyon Formation.

Lithology and environment

Primary lithology:	lithified "limestone"
Environment:	reef, buildup or bioherm

Taphonomy

Modes of preservation:	body,replaced with silica
Size of fossils:	macrofossils

Collection methods and comments

Collection excludes:	some macrofossils
Collection methods:	bulk,chemical,field collection
Reason for describing collection:	taxonomic analysis
Museum repositories:	USNM
Taxonomic list comments:A variety of papers list the brachiopods, nearly all gastropods, most bivalves (except primarily Paleotaxodonts), trilobites, chitons, siliceous sponges, rugose corals (only from Gaptank and Asselian/Sakmarian formations).

Metadata

Also known as:	Reef 2486
Database number:	43512
Authorizer:	D. Bottjer, M. Clapham	Enterer:	M. Clapham
Modifier:	M. Clapham	Research group:	marine invertebrate
Created:	2004-08-14 14:32:10	Last modified:	2013-09-01 10:51:32
Access level:	the public	Released:	2004-08-14 14:32:10
Creative Commons license:	CC BY

Reference information

Primary reference:

11454.

G. A. Cooper and R. E. Grant. 1972. Permian brachiopods of west Texas, I. Smithsonian Contributions to Paleobiology 14:1-231 [D. Bottjer/M. Clapham/M. Clapham]

Secondary references:

11476		R. L. Batten. 1958. Permian Gastropoda of the southwestern United States. 2. Pleurotomariacea: Portlockiellidae, Phymatopleuridae, and Eotomariidae. Bulletin of the American Museum of Natural History 114(2):153-246 [D. Bottjer/M. Clapham/M. Clapham]
11473		R. L. Batten. 1989. Permian Gastropoda of the southwestern United States. 7. Pleurotomariacea: Eotomariidae, Lophospiriidae, Gosseletinidae. American Museum Novitates 2958:1-64 [D. Bottjer/M. Clapham/M. Clapham]
11483		D. K. Brezinski. 1992. Permian trilobites from west Texas. Journal of Paleontology 66(6):924-943 [D. Bottjer/M. Clapham/M. Clapham]
11407		G. A. Cooper and R. E. Grant. 1977. Permian Brachiopods of West Texas, VI. Smithsonian Contributions to Paleobiology 32:3161-3370 [T. Olszewski/K. Tracy/M. Clapham]
11430		D. H. Erwin. 1988. Permian Gastropoda of the southwestern United States: Subulitacea. Journal of Paleontology 62(1):56-69 [P. Wagner/P. Wagner/P. Wagner]
11480		D. H. Erwin. 1988. The genus Glyptospira (Gastropoda: Trochacea) from the Permian of the southwestern United States. Journal of Paleontology 62(6):868-879 [D. Bottjer/M. Clapham/M. Clapham]
33849		R. M. Finks. 2010. The sponge family Guadalupiidae in the Texas Permian. Journal of Paleontology 84(5):821-847 [M. Clapham/M. Clapham]
19067		R. E. Grant. 1969. Brachiopods in the Permian Reef Environment of West Texas. Proceedings of the North American Paleontological Convention, Part J 1444-1481 [W. Kiessling/U. Merkel]
11479		M. A. Kosnik. 1997. Byzantia: a new genus (Gastropoda: Neritopsidae) from the Permian of west Texas. Journal of Paleontology 71(1):53-56 [D. Bottjer/M. Clapham/M. Clapham]
27651		A. K. Miller. 1945. Permian nautiloids from the Glass Mountains and the Sierra Diablo of west Texas. Journal of Paleontology 19(3):282-294 [M. Clapham/M. Clapham]
30039		A. K. Miller. 1945. Some exceptional Permian ammonoids from west Texas. Journal of Paleontology 19(1):14-21 [M. Clapham/M. Clapham]
33602		A. K. Miller and W. M. Furnish. 1957. Ammonoids of the basal Word Formation, Glass Mountains, west Texas. Journal of Paleontology 31:1052-1056 [M. Clapham/M. Clapham]
25653		A. K. Miller and W. Youngquist. 1949. American Permian nautiloids. Geological Society of America Memoir 41:1-218 [P. Wagner/P. Wagner/P. Wagner]
11474		N. D. Newell and D.W. Boyd. 1970. Oyster-like Permian Bivalvia. Bulletin of the American Museum of Natural History 143(4):221-281 [D. Bottjer/M. Clapham/M. Clapham]
11482		N. D. Newell and D.W. Boyd. 1975. Parallel evolution in early trigonacean bivalves. Bulletin of the American Museum of Natural History 154(2):55-162 [D. Bottjer/M. Clapham/M. Clapham]
11472		N. D. Newell and D.W. Boyd. 1995. Pectinoid bivalves of the Permian-Triassic crisis. Bulletin of the American Museum of Natural History 227:1-95 [D. Bottjer/M. Clapham/M. Clapham]
33657		B. Runnegar and N. D. Newell. 1974. Edmondia and the Edmondiacea: shallow-burrowing Paleozoic pelecypods. American Museum Novitates 2533:1-20 [M. Clapham/M. Clapham]
11490		A. G. Smith. 1976. Two new Permian chitons from west Texas (Mollusca: Polyplacophora). The Veliger 18:281-288 [D. Bottjer/M. Clapham/M. Clapham]
11481		E. L. Yochelson. 1956. Permian Gastropoda of the southwestern United States. 1. Euomphalacea, Trochonematacea, Pesudophoracea, Anomphalacea, Craspedostomatacea, and Platyceratacea. Bulletin of the American Museum of Natural History 110(3):173-276 [D. Bottjer/M. Clapham/M. Clapham]
11477		E. L. Yochelson. 1960. Permian Gastropoda of the southwestern United States. 3. Bellerophontacea and Patellacea. Bulletin of the American Museum of Natural History 119(4):208-293 [D. Bottjer/M. Clapham/M. Clapham]