USGS 2541-CO (Cambrian of the United States)

Where: White Pine County, Nevada (40.0° N, 114.9° W: paleocoordinates 4.0° S, 87.4° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: Dunderbergia trilobite zone, Dunderberg Shale Formation, Steptoean (497.0 - 493.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lithified, silty limestone and lithified siltstone

• Interbedded siltstone and silty limestone

Size class: macrofossils

Collected by A. R. Palmer in the 1960s; reposited in the USGS, USNM

Collection methods: mechanical,

Primary reference: A. R. Palmer. 1965. Trilobites of the Late Cambrian Pterocephaliid Biomere in the Great Basin, United States. United States Geological Survey Professional Paper 493:1-105 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 110446: authorized by Melanie Hopkins, entered by Melanie Hopkins on 08.06.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Ptychopariida - Phylacteridae
Aphelotoxon acuminata Palmer 1960 trilobite
 Ptychopariida - Elviniidae
 Olenida - Pterocephaliidae
Strigambitus utahensis Resser 1942 trilobite
Morosa definita trilobite