Collection 41192, 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, ooidal packstone

• ooids (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 9437: authorized by Mark Patzkowsky, entered by Phil Borkow on 03.11.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

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Trilobita
 Corynexochida - Zacanthoididae
Albertelloides rectimarginatus, Ptarmiganoides hexacantha
Albertelloides rectimarginatus Palmer and Halley 1979 trilobite
2 pygidia
Ptarmiganoides hexacantha Palmer and Halley 1979 trilobite
1 cranidium
 Corynexochida - Dorypygidae
Olenoides maladensis, Olenoides sp., Kootenia cf. crassinucha
Olenoides maladensis trilobite
1 pygidium
Olenoides sp. Meek 1877 trilobite
1 pygidium (species unidentifyable)
Kootenia cf. crassinucha Fritz 1968 trilobite
10 cranidia, 6 pygidia
 Ptychopariida - Ptychopariidae
Volocephalina sp., Pachyaspis sp.
Volocephalina sp. Palmer and Halley 1979 trilobite
3 cranidia (species unidentifyable)
Pachyaspis sp. Resser 1938 trilobite
3 cranidia (species unidentifyable)