USNM714p, Skinner Ranch Formation, Leonard Mountain, Glass Mountains (Permian of the United States)

Also known as Reef 319

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)

• Lower Skinner Ranch Fm.

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone

• bioherm

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 75933: 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
Geyerella hessi1, Meekella hessensis1
Geyerella hessi1 Cooper and Grant 1974
Meekella hessensis1 King 1931
 Orthotetida - Derbyiidae
Diplanus rarus1, Derbyia sp.1, Derbyia nasuta1
Diplanus rarus1 Cooper and Grant 1974
Derbyia sp.1 Waagen 1884
Derbyia nasuta1 Girty 1908
 Productida - Lyttoniidae
Eolyttonia gigantea1
Eolyttonia gigantea1 Cooper and Grant 1974
 Productida - Cyclacanthariidae
"Teguliferina conida" = Planispina conida1
"Teguliferina conida" = Planispina conida1 Stehli 1954
 Productida - Scacchinellidae
Scacchinella titan1
Scacchinella titan1 Cooper and Grant 1975
Rhynchonellata
 Rhynchonellida - Pontisiidae
Antronaria transversa1
 Athyridida - Athyrididae
Composita discina1
Composita discina1 Cooper and Grant 1976
 Athyridida - Neoretziidae
Hustedia sp.1, Hustedia catella1
Hustedia sp.1 Hall and Clarke 1893
Hustedia catella1 Cooper and Grant 1976
 Orthida - Rhipidomellidae
Rhipidomella hessensis1
 Orthida - Schizophoriidae
"Acosarina dorsisulcata" = Acosarina minuta1
"Acosarina dorsisulcata" = Acosarina minuta1 Abich 1878
Anthozoa
 Stauriida - Lophotichiidae
Paraduplophyllum (Vacoea) vermiculare2, Assimulia (Assimulia) abscessa2, Assimulia (Assimulia) flexibilis2
Paraduplophyllum (Vacoea) vermiculare2 Fedorowski 1987 horn coral
Assimulia (Assimulia) abscessa2 Fedorowski 1987 horn coral
Assimulia (Assimulia) flexibilis2 Fedorowski 1987 horn coral
1Cooper and Grant 1977; 2Fedorowski 1987