Spruce Mountain SM-393 (Permian of the United States)

Where: Elko County, Nevada (40.5° N, 114.8° W: paleocoordinates 15.7° N, 35.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

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

• 393 feet above base of Gerster Fm.

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; limestone

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 39512: authorized by David Bottjer, entered by Matthew Clapham on 30.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida -
Pectinoidea indet. Rafinesque 1815 scallop
Strophomenata
 Productida - Aulostegidae
Ctenalosia fixata Cooper and Stehli 1955
 Productida - Productidae
 Productida - Linoproductidae
cf. Grandaurispina "n. sp. A" Muir-Wood and Cooper 1960
Written "Grandaurispina" n. sp. A
Rhynchonellata
 Athyridida - Neoretziidae
Hustedia elongata Cooper 1953
"n. ssp."
 Athyridida - Athyrididae
Composita mira Girty 1899
 Terebratulida - Dielasmatidae
 Spiriferinida - Pennospiriferinidae
Anthozoa
 Rugosa -
Rugosa indet. horn coral
"Horn corals"