Grapevine Mountains (USGS 7183-CO) (Cambrian of the United States)

Where: California (36.8° N, 117.1° W: paleocoordinates 1.3° S, 96.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Olenellus trilobite zone, Thimble Limestone Member (Carrara Formation), Dyeran (516.0 - 513.0 Ma)

• This member typically has abundant and diverse

•olenellid trilobites and rare associated ptychopariid trilobites

•which characterize the Bristolia Zonule.

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; dolomitic, black, brown, argillaceous lime mudstone

• The Thimble Limestone Member is characterized by

•black, brown, and orange thin-bedded argillaceous

•dolomitic limestone which varies in argillaceous content

•throughout the study area.

Size classes: macrofossils, mesofossils, microfossils

Primary reference: A. R. Palmer and R. B. Halley. 1979. Physical Stratigraphy and Trilobite Biostratigraphy of the Carrara Formation (Lower and Middle Cambrian) in the Southern Great Basin. United States Geological Survey Professional Paper 1047:1-131 [W. Kiessling/M. Krause/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 151378: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 30.09.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Redlichiida - Olenellidae
Peachella iddingsi Walcott 1884 trilobite
 Redlichiida - Biceratopsidae
Bristolia fragilis Palmer and Halley 1979 trilobite
Bristolia anteros Palmer and Halley 1979 trilobite