Collection 41202 [Grassy Spring Mbr, Pioche Shale] (Cambrian of the United States)

Where: Lincoln County, Nevada (37.5° N, 114.8° W: paleocoordinates 3.1° S, 94.0° W)

• outcrop-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified packstone

• bioclastics (interpretted from the stratigraphic column on figure 4).

Size class: macrofossils

Collection methods: Only trilobites form the Albertellina aspinosa subbiozone were collected.

Primary reference: J. D. Eddy and L. B. McCollum. 1998. Early Middle Cambrian Albertella biozone trilobites of the Pioche Shale, southeastern Nevada. Journal of Paleontology 72(5):864-887 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9475: authorized by Mark Patzkowsky, entered by Phil Borkow on 13.11.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Ptychopariida - Ptychopariidae
Nyella immoderata
Nyella immoderata Palmer and Halley 1979 trilobite
 Corynexochida - Zacanthoididae
Albertella fritzi, Albertelloides kitai
Albertella fritzi Eddy and McCollum 1998 trilobite
Albertelloides kitai Eddy and McCollum 1998 trilobite