Pioche Shale, Bed 74 (Cambrian of the United States)

Where: White Pine County, Nevada (40.0° N, 115.0° W: paleocoordinates 3.2° S, 91.5° W)

• coordinate estimated from map

• hand sample-level geographic resolution

When: Upper Member (Pioche Shale Formation), Delamaran (511.2 - 506.5 Ma)

• Listed as Lower to Middle Cambrian, Glossopleura biozone

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, fine-grained, black, gray limestone and poorly lithified shale

• medium to thin beds of medium to dark-gray and black, finely crystalline limestone at base of upper shale layer of the Glossopleura faunizone

Size classes: macrofossils, mesofossils

Collection methods: Trilobites only; articulates observed but not collected. Collection 74, 1125 feet above base of formation

Primary reference: W. H. Fritz. 1968. Lower and early Middle Cambrian trilobites from the Pioche Shale, East-Central Nevada, U.S.A. Palaeontology 11:36-43 [P. Novack-Gottshall/P. Hearn/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 155997: authorized by Melanie Hopkins, entered by Melanie Hopkins on 06.05.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
  -
"Trilobita" indet. Walch 1771 trilobite
 Ptychopariida - Alokistocaridae
Kistocare campbellensis n. sp. Fritz 1968 trilobite
 Ptychopariida - Ptychopariidae
Caborcella sp. Lochman 1948 trilobite
 Corynexochida - Dorypygidae
Kootenia crassa Fritz 1968 trilobite
 Corynexochida - Dolichometopidae
Corynexochides prolatus Fritz 1968 trilobite
Glossopleura sp. Poulsen 1927 trilobite
Athabaskia sp. Raymond 1928 trilobite