USNM706f, lower Hess Canyon, Glass Mountains (Permian of the United States)

Where: Brewster County, Texas (30.4° N, 103.2° W: paleocoordinates 1.4° N, 33.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Road Canyon Formation, Roadian (272.3 - 268.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: slope; limestone

• Road Canyon Formation records largely slope and basinal deposition.

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 43554: authorized by David Bottjer, entered by Matthew Clapham on 14.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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).
Cephalopoda
 Goniatitida - Adrianitidae
Neocrimites sp. Ruzhentsev 1940 ammonite
Rhynchonellata
 Spiriferinida - Paraspiriferinidae
Paraspiriferina cellulana Cooper and Grant 1976
 Spiriferinida - Spiriferellinidae
Metriolepis ziczac Cooper and Grant 1976
 Spiriferinida - Reticulariinidae
Reticulariina sp. Fredericks 1916
Altiplecus "sp. 2" Stehli 1954
 Orthida - Enteletidae
Enteletes sp. Waldheim 1825
Enteletes densus Cooper and Grant 1976
 Orthida - Schizophoriidae
 Terebratulida - Dielasmatidae
Dielasma sp. Beede and Rogers 1900
Dielasma ellipsoideum Cooper and Grant 1976
 Terebratulida - Cryptonellidae
Heterelasma glansfagea Cooper and Grant 1976
 Spiriferida - Trigonotretidae
 Spiriferida - Spiriferellidae
Spiriferella sp. Tschernyschew 1902
 Spiriferida - Ambocoeliidae
"Crurithyris minutalis" = Cruricella minutalis
"Crurithyris minutalis" = Cruricella minutalis Cooper and Grant 1976
 Spiriferida - Elythidae
Neophricadothyris crassibecca Cooper and Grant 1976
 Athyridida - Athyrididae
Composita sp. Brown 1849
Composita enormis Cooper and Grant 1976
Composita crassa Cooper and Grant 1976
Composita pilula Cooper and Grant 1976
 Athyridida - Neoretziidae
Hustedia cuneata Cooper and Grant 1976
Hustedia consuta Cooper and Grant 1976
 Rhynchonellida - Rhynchoporidae
Rhynchopora hebetata Cooper and Grant 1976
 Rhynchonellida - Wellerellidae
Cenorhynchia saginata Cooper and Grant 1976
Phrenophoria sp. Cooper and Grant 1969
? Phrenophoria compressa Cooper and Grant 1976
 Rhynchonellida - Petasmatheridae
Elassonia micraria Cooper and Grant 1976
Petasmatherus nitidus Cooper and Grant 1976
Petasmatherus pumilus Cooper and Grant 1976
 Rhynchonellida - Stenoscismatidae
Stenoscisma sp. Conrad 1839
Stenoscisma maniculum Cooper and Grant 1976
Stenoscisma triquetrum Cooper and Grant 1976
Stenoscisma calvatum Cooper and Grant 1976
Stenoscisma camurum Cooper and Grant 1976
Strophomenata
 Orthotetida - Meekellidae
Meekella calathica Cooper and Grant 1974
 Orthotetida - Derbyiidae
Derbyia filosa Cooper and Grant 1974
 Orthotetida - Schuchertellidae
Tropidelasma corniculum Cooper and Grant 1974
 Productida - Lyttoniidae
Coscinophora magnifica Cooper and Grant 1974
 Productida - Cyclacanthariidae
Cyclacantharia transitoria Cooper and Grant 1975
 Productida - Productellidae
Echinauris lappacea Cooper and Grant 1975
Echinauris bella Cooper and Grant 1975
Echinauris irregularis Cooper and Grant 1975
 Productida -
Rhytisia rugosa Cooper and Grant 1975
 Productida - Paucispiniferidae
 Productida - Aulostegidae
Rhamnaria vinnula Cooper and Grant 1975
Craniata
 Craniida - Craniidae
Lepidocrania tardispinosa Cooper and Grant 1974