Collection 41161, Grassy Spring Mb., Pioche Shale, NV - Eddy and McCollum 1998 (Cambrian of the United States)

Where: Lincoln County, Nevada (37.9° 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 (510.2 - 504.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: packstone

• bioclastics

Collection methods: Only trilobites from 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 9454: authorized by Mark Patzkowsky, entered by Phil Borkow on 04.11.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

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Trilobita
 Corynexochida - Zacanthoididae
Zacanthoides sp., Albertellina aspinosa
Zacanthoides sp. Walcott 1888 trilobite
4 pygidia
Albertellina aspinosa Palmer and Halley 1979 trilobite
3 cranidia, 5 pygidia
 Ptychopariida - Ptychopariidae
Volocephalina variosa n. sp., "Nyella granosa" = Palmerara granosa, Panacus palmeri n. gen. n. sp.
Volocephalina variosa n. sp. Eddy and McCollum 1998 trilobite
5 cranidia
"Nyella granosa" = Palmerara granosa Resser 1939 trilobite
1 cranidium
Panacus palmeri n. gen. n. sp. Eddy and McCollum 1998 trilobite
7 cranidia
 Ptychopariida -
Mexicella granulata n. sp.
Mexicella granulata n. sp. Eddy and McCollum 1998 trilobite
25 cranidia