USGS 2534-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• coordinate based on unpublished field data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: Aphelaspis trilobite zone, Dunderberg Shale Formation, Steptoean (501.0 - 485.4 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 110440: authorized by Melanie Hopkins, entered by Melanie Hopkins on 08.06.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Corynexochida - Cheilocephalidae
? Cheilocephalus granulosus Palmer 1965 trilobite
 Olenida - Aphelaspidae
Aphelaspis subditus Palmer 1962 trilobite
Listroa toxoura Palmer 1962 trilobite
Olenaspella regularis Palmer 1962 trilobite