Collection 41194, 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 (510.2 - 504.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lithified packstone

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

Collection methods: Only trilobites from the Albertellina aspinosa 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 9439: authorized by Mark Patzkowsky, entered by Phil Borkow on 03.11.2000

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
8 cranidia, 1 pygidium
 Corynexochida - Zacanthoididae
Ptarmiganoides hexacantha, Ursinella major n. gen. n. sp., Albertelloides kitai n. sp., Albertella fritzi n. sp.
Ptarmiganoides hexacantha Palmer and Halley 1979 trilobite
2 pygidia
Ursinella major n. gen. n. sp. Eddy and McCollum 1998 trilobite
1 pygidium
Albertelloides kitai n. sp. Eddy and McCollum 1998 trilobite
45 cranidia, 50 pygidia
Albertella fritzi n. sp. Eddy and McCollum 1998 trilobite
13 cranidia, 35 pygidia