Where: Clark County, Nevada (36.2° N, 115.0° W: paleocoordinates 2.7° S, 95.3° W)

• coordinate estimated from map

When: Albertella trilobite zone, Pioche Shale Formation, Delamaran (511.2 - 506.5 Ma)

• 56 feet thick. AGE: Delamaran; refined by A. Hendy (6/2009) on the basis of biostratigraphic data (= Crepicephalus zone).

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, green shale

Size class: macrofossils

Collection methods: Does not include annelids which were undescribed, but occur in the formation.

Primary reference: P. D. Pack and H. B. Gayle. 1971. A new Olenellid trilobite, Biceratops nevadensis, from the Lower Cambrian near Las Vegas, Nevada. Journal of Paleontology 45(5):893-898 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9621: authorized by Mark Patzkowsky, entered by Phil Borkow on 23.03.2001

Creative Commons license: CC BY (attribution)