Pioche Shale, Bed 10 (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: Albertella trilobite zone, Upper Member (Pioche Shale Formation), Delamaran (511.2 - 506.5 Ma)

• Listed as Lower to Middle Cambrian, Albertella

• group of beds-level stratigraphic resolution

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

• thin beds of medium to dark gray and black, finely crystalline limestone at the base of shale

Size classes: macrofossils, mesofossils

Collected by W.H. Fritz; reposited in the USNM

• Trilobites only; articulates observed but not collected. Collection 10, 510 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 155984: authorized by Melanie Hopkins, entered by Melanie Hopkins on 05.05.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Dolichometopidae
Poliella germana Resser 1939 trilobite
Poliella leipalox Fritz 1968 trilobite
 Corynexochida - Zacanthoididae
Ptarmiganoides araneicauda Fritz 1968 trilobite
Albertella judithi Fritz 1968 trilobite
Albertella lata n. sp. Fritz 1968 trilobite
 Corynexochida - Oryctocephalidae
cf. Oryctocephalus primus Walcott 1886 trilobite
Artiopoda
 Agnostida - Eodiscidae
Pagetia clytia Walcott 1916
Pagetia resseri Kobayashi 1943