USNM727f, Hess Ranch, Glass Mountains (Permian of the United States)

Where: Brewster County, Texas (30.4° N, 103.2° W: paleocoordinates 1.1° N, 33.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Skinner Ranch Formation, Kungurian (279.3 - 272.3 Ma)

• Upper Skinner Ranch Fm.

• 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 75925: 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).
Show authors, comments, and common names
Anthozoa
 Stauriida - Lophophyllidae
Lophophyllidium (Lophbillidium) cyathaxoniaforme3
 Stauriida - Diffingiidae
Turgidiffia composita n. gen.2, Diffingia coita2, Diffingia divisa2
Turgidiffia composita n. gen.2 Fedorowski 1985 horn coral
Diffingia coita2 Fedorowski 1985 horn coral
Diffingia divisa2 Fedorowski 1985 horn coral
 Stauriida - Lophotichiidae
Assimulia (Ericina) recrea3, Assimulia (Assimulia) abscessa3, Assimulia (Assimulia) tergida3
Assimulia (Ericina) recrea3 Fedorowski 1987 horn coral
Assimulia (Assimulia) abscessa3 Fedorowski 1987 horn coral
Assimulia (Assimulia) tergida3 Ross and Ross 1962 horn coral
Strophomenata
 Orthotetida - Meekellidae
Meekella hessensis1
Meekella hessensis1 King 1931
 Orthotetida - Derbyiidae
Derbyia sp.1
Derbyia sp.1 Waagen 1884
 Productida - Aulostegidae
Limbella limbata1
Limbella limbata1 Cooper and Grant 1975
 Productida - Cyclacanthariidae
Acritosia solida1
Acritosia solida1 Cooper and Grant 1975
 Productida - Lyttoniidae
Choanodus irregularis1
Choanodus irregularis1 Cooper and Grant 1974
 Productida - Productellidae
Spyridiophora reticulata1, Echinauris sp.1
Echinauris sp.1 Muir-Wood and Cooper 1960
Rhynchonellata
 Athyridida - Athyrididae
Composita sp.1
Composita sp.1 Brown 1849
 Athyridida - Neoretziidae
Hustedia sp.1
Hustedia sp.1 Hall and Clarke 1893
 Spiriferida - Trigonotretidae
Neospirifer sp.1
Neospirifer sp.1 Fredericks 1919
 Orthida - Rhipidomellidae
Rhipidomella hessensis1
 Orthida - Enteletidae
Enteletes subcircularis1
Enteletes subcircularis1 Cooper and Grant 1976
 Orthida - Schizophoriidae
"Acosarina dorsisulcata" = Acosarina minuta1
"Acosarina dorsisulcata" = Acosarina minuta1 Abich 1878
1Cooper and Grant 1977; 2Fedorowski 1985; 3Fedorowski 1987