USNM741p, Hess Canyon, Glass Mountains (Permian of the United States)

Where: Texas (30.4° N, 103.2° W: paleocoordinates 1.6° N, 33.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Word Formation, Wordian (266.9 - 264.3 Ma)

• Uppermost of 2 lenses between Willis Ranch Member and Appel Ranch Member

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, chemical,

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106290: authorized by Matthew Clapham, entered by Matthew Clapham on 06.03.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Spiriferinida - Reticulariinidae
Reticulariina cerina Cooper and Grant 1976
 Spiriferinida - Pennospiriferinidae
Arionthia germana Cooper and Grant 1976
 Spiriferinida - Paraspiriferinidae
Paraspiriferina rotundata Cooper and Grant 1976
 Rhynchonellida - Rhynchoporidae
Rhynchopora tenera Cooper and Grant 1976
 Rhynchonellida - Stenoscismatidae
Stenoscisma sp. Conrad 1839
 Terebratulida - Dielasmatidae
Dielasma sp. King 1856
 Athyridida - Athyrididae
Composita sp. Brown 1849
Composita parasulcata Cooper and Grant 1976
 Athyridida - Neoretziidae
Hustedia sp. Hall and Clarke 1893
Hustedia pugilla Cooper and Grant 1976
ssp. hebetata
 Spiriferida - Spiriferellidae
Spiriferella sp. Tschernyschew 1902
 Spiriferida - Trigonotretidae
Neospirifer amphigyus Cooper and Grant 1976
Strophomenata
 Productida - Aulostegidae
Rhamnaria kingorum Muir-Wood and Cooper 1960
Xenosteges quadratus Cooper and Grant 1975
 Productida - Cooperinidae
Cooperina inexpectata Termier et al. 1966
 Productida - Lyttoniidae
Pseudoleptodus grandis Cooper and Grant 1974
Eolyttonia progressa Cooper and Grant 1974
 Productida - Cyclacanthariidae
Cyclacantharia kingorum Cooper and Grant 1969
 Productida - Paucispiniferidae
Paucispinifera quadrata Cooper and Grant 1975
Liosotella tetragonalis Cooper and Grant 1975
Liosotella irregularis Cooper and Grant 1975
 Productida - Linoproductidae
Megousia definita Cooper and Grant 1975
Grandaurispina crassa Cooper and Grant 1975
Grandaurispina gibbosa Cooper and Grant 1975
 Productida - Productellidae
Echinauris lateralis Muir-Wood and Cooper 1960
 Orthotetida - Derbyiidae
Derbyia texta Cooper and Grant 1974
Derbyia pannucia Cooper and Grant 1974
 Orthotetida - Meekellidae
Meekella skenoides Girty 1909
 Strophomenida - Rugosochonetidae
Dyoros (Dyoros) convexus Cooper and Grant 1975