USNM723o, Hill 5280, Glass Mountains (Permian to of the United States)

Where: Brewster County, Texas (30.3° N, 103.3° W: paleocoordinates 0.4° N, 33.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Skinner Ranch Formation, Artinskian to Artinskian (290.1 - 272.3 Ma)

• Leonardian (Hessian).

• group of beds-level stratigraphic resolution

Environment/lithology: slope; lithified limestone

• Skinner Ranch Fm. is slope to basinal equivalent of platformal Hess Formation.

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 75927: authorized by Wolfgang Kiessling, entered by Uta Merkel on 06.11.2007, edited by Matthew Clapham

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).
Anthozoa
 Stauriida - Lophotichiidae
Assimulia (Ericina) fracta3 Fedorowski 1987 horn coral
 Stauriida - Diffingiidae
Diffingia coita2 Fedorowski 1985 horn coral
Diffingia divisa2 Fedorowski 1985 horn coral
Strophomenata
 Orthotetida - Meekellidae
Meekella hessensis1 King 1931
 Orthotetida - Derbyiidae
Derbyia laqueata1 Cooper and Grant 1974
 Productida - Productellidae
 Productida - Aulostegidae
Glyptosteges intricatus1 Cooper and Grant 1975
Rhynchonellata
 Spiriferida - Elythidae
"Neophricadothyris sp." = Phricodothyris1
"Neophricadothyris sp." = Phricodothyris1 George 1932
 Spiriferida - Ambocoeliidae
Crurithyris sp.1 George 1931
 Spiriferinida - Reticulariinidae
Reticulariina sp.1 Fredericks 1916
 Athyridida - Athyrididae
Composita sp.1 Brown 1849
 Athyridida - Neoretziidae
Hustedia catella1 Cooper and Grant 1976
 Orthida - Enteletidae
Enteletes sp.1 Waldheim 1825
 Orthida - Schizophoriidae
"Acosarina dorsisulcata" = Acosarina minuta1
"Acosarina dorsisulcata" = Acosarina minuta1 Abich 1878
 Orthida - Rhipidomellidae
 Rhynchonellida - Stenoscismatidae
Stenoscisma sp.1 Conrad 1839
 Rhynchonellida - Pontisiidae
Antronaria dissona1 Cooper and Grant 1976
Antronaria voluminosa1 Cooper and Grant 1976
 Terebratulida - Dielasmatidae
Plectelasma kingi1 Cooper and Grant 1969