Where: Nevada (37.5° N, 114.7° W: paleocoordinates 3.2° S, 95.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: C-Shale Member (Pioche Shale Formation), Dyeran (515.3 - 511.2 Ma)

• Shales overly the limestone nodules of the upper unit, Combined Metals member.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified shale

Preservation: replaced with silica

Primary reference: A. R. Palmer. 1999. Oak Springs Summit section, type locality for the base of the Delamaran Stage. Laurentia 99: V field conference of the Cambrian Stage Subdivision Working Group, International Subcomission on Cambrian Stratigraphy 26-28 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 10569: authorized by Mark Patzkowsky, entered by Phil Borkow on 23.05.2001

Creative Commons license: CC BY (attribution)