USNM724q, Leonard Mountain, Glass Mountains (Permian of the United States)

Where: Brewster County, Texas (30.3° N, 103.2° W: paleocoordinates 0.8° S, 34.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• 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 75930: authorized by Wolfgang Kiessling, entered by Uta Merkel on 06.11.2007

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
Strophomenata
 Orthotetida - Meekellidae
Meekella sp.1
 Productida - Productellidae
Fimbrinia ovata1, Kozlowskia subsphaeroidalis1
Fimbrinia ovata1 Cooper and Grant 1975
Kozlowskia subsphaeroidalis1 Cooper and Grant 1975
 Productida - Paucispiniferidae
Hystriculina pumila1
Hystriculina pumila1 Cooper and Grant 1975
 Productida - Scacchinellidae
Scacchinella titan1
Scacchinella titan1 Cooper and Grant 1975
 Strophomenida - Rugosochonetidae
Chonetinella biplicata1
Rhynchonellata
 Spiriferida - Ambocoeliidae
Crurithyris sp.1
Crurithyris sp.1 George 1931
 Orthida - Schizophoriidae
"Acosarina dorsisulcata" = Acosarina minuta1
"Acosarina dorsisulcata" = Acosarina minuta1 Abich 1878
 Orthida - Enteletidae
Enteletes sp.1
Enteletes sp.1 Waldheim 1825
 Orthida - Rhipidomellidae
Rhipidomella hessensis1
 Spiriferinida - Spiriferellinidae
Crenispirifer angulatus1
 Terebratulida - Cranaenidae
Anomalesia perplexa1
Anomalesia perplexa1 Cooper and Grant 1976
 Rhynchonellida - Pontisiidae
Pontisia costata1, Antronaria dissona1
Pontisia costata1 Cooper and Grant 1976
Antronaria dissona1 Cooper and Grant 1976
 Rhynchonellida - Wellerellidae
Tautosia fastigiata1
Tautosia fastigiata1 Cooper and Grant 1969
 Athyridida - Athyrididae
Composita apheles1
Composita apheles1 Cooper and Grant 1976
 Athyridida - Neoretziidae
Hustedia catella1, Hustedia hessensis1
Hustedia catella1 Cooper and Grant 1976
Hustedia hessensis1 King 1931
Anthozoa
 Stauriida - Lophotichiidae
Paraduplophyllum (Vacoea) vermiculare2
Paraduplophyllum (Vacoea) vermiculare2 Fedorowski 1987 horn coral
1Cooper and Grant 1977; 2Fedorowski 1987