Collection 41163, Grassy Spring Mb., Pioche Shale, NV - Eddy and McCollum 1998 (Cambrian of the United States)

Where: Lincoln County, Nevada (37.8° N, 114.6° W: paleocoordinates 3.2° S, 93.1° 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 the stratigraphic columns of figure 3).

Collection methods: Only trilobites from the Albertella highlandensis 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 9461: authorized by Mark Patzkowsky, entered by Phil Borkow on 05.11.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Ptychopariida -
Mexicella mexicana Lochman 1948 trilobite
1 cranidium
 Ptychopariida - Ptychopariidae
Volocephalina connexa Palmer and Halley 1979 trilobite
3 cranidia
Plagiura minor Palmer and Halley 1979 trilobite
1 cranidium
 Corynexochida - Zacanthoididae
? Zacanthoides sp. Walcott 1888 trilobite
1 cranidium
Albertella highlandensis n. sp. Eddy and McCollum 1998 trilobite
50 cranidia, 30 pygidia, 5 librigena, 5 hypostomes