Collection 41193, Grassy Spring Mb., Pioche Shale, NV - Eddy and McCollum 1998 (Cambrian of the United States)

Where: Lincoln County, Nevada (37.5° N, 114.8° W: paleocoordinates 3.0° S, 93.4° W)

• outcrop-level geographic resolution

When: Albertella Biozone zone, Grassy Spring Member (Pioche Shale Formation), Solvan (513.0 - 501.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lithified packstone

• bioclastics (interpretted from figure 4. stratigraphic sections).

Collection methods: Only trilobites from the ""unnamed 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 9438: authorized by Mark Patzkowsky, entered by Phil Borkow on 03.11.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Ptychopariida -
Mexicella mexicana Lochman 1948 trilobite
1 cranidium
 Ptychopariida - Ptychopariidae
Volocephalina sp. Palmer and Halley 1979 trilobite
1 cranidium (species not identifyable)
 Corynexochida - Zacanthoididae
Paralbertella sp. Palmer and Halley 1979 trilobite
1 pygidium (species not identifyable)
Albertelloides sp. Fritz 1968 trilobite
2 cranidia, 5 pygidia (species not identifyable)
Albertelloides rectimarginatus Palmer and Halley 1979 trilobite
4 cranidia, 1 pygidium