Spruce Mountain SM-(-75) (Permian of the United States)

Where: Elko County, Nevada (40.5° N, 114.8° W: paleocoordinates 15.2° N, 35.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Plympton Formation (Park City Group), Wordian (268.8 - 265.1 Ma)

• 75 feet below base of Gerster Formation

• 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 39496: authorized by David Bottjer, entered by Matthew Clapham on 30.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Productida - Echinoconchidae
 Productida - Productellidae
cf. Echinauris subhorrida Meek 1877
Written "Echinauris" subhorrida
 Orthotetida - Derbyiidae
Derbyia sulca Branson 1930
Rhynchonellata
 Spiriferinida - Pennospiriferinidae