USNM705b, Hess Ranch Horst, Glass Mountains (Permian of the United States)

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

• Paleocoordinates: 1.9° S, 35.1° W (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Skinner Ranch Formation, Artinskian (290.1 - 279.3 Ma)

• Base of Skinner Ranch Formation. Leonardian (Hessian).

• group of beds-level stratigraphic resolution

Environment/lithology: slope; 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 43535: authorized by David Bottjer, entered by Matthew Clapham on 14.08.2004

Creative Commons license: CC0 (CC0)

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
Rhynchonellata
 Athyridida - Athyrididae
Composita apheles
Composita apheles Cooper and Grant 1976
 Rhynchonellida - Stenoscismatidae
Stenoscisma pyraustoides
Stenoscisma pyraustoides Cooper and Grant 1976
 Orthida - Schizophoriidae
Orthotichia newelli
Orthotichia newelli Cooper and Grant 1976
 Orthida - Enteletidae
Enteletes rotundobesus
Enteletes rotundobesus Cooper and Grant 1976
 Spiriferinida - Reticulariinidae
Altiplecus glebosus
Altiplecus glebosus Cooper and Grant 1976
Strophomenata
 Productida - Scacchinellidae
Scacchinella titan
Scacchinella titan Cooper and Grant 1975
 Productida - Lyttoniidae
Eolyttonia gigantea
Eolyttonia gigantea Cooper and Grant 1974
 Productida - Productidae
"Antiquatonia hessensis" = Rigrantia hessensis
"Antiquatonia hessensis" = Rigrantia hessensis King 1931
 Orthotetida - Derbyiidae
Derbyia sp.
Derbyia sp. Waagen 1884