Southern Pequop Mountains SPM-45 (Permian of the United States)

Where: Elko County, Nevada (40.5° N, 114.7° W: paleocoordinates 15.6° N, 35.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Gerster Formation (Park City Group), Capitanian (265.1 - 259.9 Ma)

• 45 feet above base of measured section

•originally entered as Wordian: changed to Capitanian on 19 September 2006

• group of beds-level stratigraphic resolution

Environment/lithology: marine; peloidal, shelly/skeletal, silty, cherty/siliceous wackestone

• silty, fossiliferous, pelletal wackestone (chertified)

Size class: macrofossils

Preservation: replaced with silica

Collection methods: bulk, chemical,

Primary reference: B. R. Wardlaw. 1977. The biostratigraphy and paleoecology of the Gerster Limestone (Upper Permian) in Nevada and Utah. U.S.G.S. Open File Report 77(470):1-125 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 39515: authorized by David Bottjer, entered by Matthew Clapham on 30.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
 Pectinida - Aviculopectinidae
Aviculopecten sp. M'Coy 1851 scallop
 Pectinida - Heteropectinidae
Girtypecten sp. Newell 1938 scallop
Strophomenata
 Productida - Aulostegidae
Ctenalosia fixata Cooper and Stehli 1955
 Productida - Echinoconchidae
 Productida - Productellidae
cf. Echinauris subhorrida Meek 1877
Written "Echinauris" subhorrida
 Productida - Linoproductidae
Kuvelousia leptosa Waterhouse 1968
cf. Grandaurispina "n. sp. A" Muir-Wood and Cooper 1960
Written "Grandaurispina" n. sp. A
 Orthotetida - Derbyiidae
Derbyia sulca Branson 1930
Rhynchonellata
 Athyridida - Athyrididae
Composita mira Girty 1899
 Terebratulida - Dielasmatidae
 Spiriferinida - Pennospiriferinidae
 Rhynchonellida - Wellerellidae
Cenorhynchia "n. sp. B" Cooper and Grant 1976
Anthozoa
 Rugosa -
Rugosa indet. horn coral
"Horn corals"