Collection 41168, Grassy Spring Mb., Pioche Shale, NV - Eddy and McCollum1998 (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 (510.2 - 504.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lithified packstone

• bioclastics (interpretted from the stratigraphic columns of figure 3).

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 9467: authorized by Mark Patzkowsky, entered by Phil Borkow on 05.11.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Corynexochida - Zacanthoididae
Delamarella brevispinaspis n. gen. n. sp., Ursinella major n. gen. n. sp., Albertellina aspinosa
Delamarella brevispinaspis n. gen. n. sp. Eddy and McCollum 1998 trilobite
4 cranidia, 8 pygidia
Ursinella major n. gen. n. sp. Eddy and McCollum 1998 trilobite
4 pygidia
Albertellina aspinosa Palmer and Halley 1979 trilobite
6 cranidia, 6 pygidia
 Ptychopariida - Ptychopariidae
Volocephalina variosa, "Nyella granosa" = Palmerara granosa, Panacus palmeri n. gen. n. sp.
Volocephalina variosa Eddy and McCollum 1998 trilobite
17 cranidia
"Nyella granosa" = Palmerara granosa Resser 1939 trilobite
1 cranidium
Panacus palmeri n. gen. n. sp. Eddy and McCollum 1998 trilobite
6 cranidium
 Ptychopariida -
Mexicella granulata n. sp.
Mexicella granulata n. sp. Eddy and McCollum 1998 trilobite
12 cranidia