Where: Nevada (37.8° N, 114.6° W: paleocoordinates 3.4° S, 95.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• Fossiliferous horizon is in the lower2 meters of the C-Shale Member. Th horizons upper boundary marks the Laurentian extinction of the Olenellida and the Dyeran/Delamaran boundary.

• bed-level stratigraphic resolution

Environment/lithology: lithified, argillaceous, silty shale

Collection methods: Only trilobites are described in detail.

Primary reference: A. R. Palmer. 1999. Ruin Wash, Chief Range Nevada. Laurentia 99: V field conference of the Cambrian Stage Subdivision Working Group, International Subcomission on Cambrian Stratigraphy 24-25 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 10560: authorized by Mark Patzkowsky, entered by Phil Borkow on 22.05.2001, edited by Mihaela Krause

Creative Commons license: CC BY (attribution)