USGS 3539-CO (Cambrian of the United States)

Where: Nye County, Nevada (37.1° N, 116.0° W)

• Paleocoordinates: 32.2° N, 123.7° W (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Elvinia trilobite zone, Windfall Formation, Steptoean (497.0 - 493.5 Ma)

• Footage estimated from scaled stratigraphic column (plate 23).

• bed-level stratigraphic resolution

Environment/lithology: lithified, massive limestone

Size class: macrofossils

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

Collection methods: bulk,

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 111329: authorized by Melanie Hopkins, entered by Melanie Hopkins on 23.06.2011

Creative Commons license: CC0 (CC0)

Taxonomic list

Trilobita
 Ptychopariida - Elviniidae
Irvingella major Ulrich and Resser 1924 trilobite
Elvinia roemeri Shumard 1861 trilobite
 Olenida - Dokimokephalidae
? Iddingsia robusta Walcott 1884 trilobite
 Olenida - Pterocephaliidae
Pterocephalia sanctisabae Roemer 1849 trilobite
Anechocephalus spinosus Palmer 1965 trilobite