Groom Range, Carrara Fm, Pahrump Hills Shale Member Mbr. (USGS 3483-CO) (Cambrian of the United States)

Where: Nevada (37.5° N, 115.7° W: paleocoordinates 2.3° S, 94.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Albertella trilobite zone, Pahrump Hills Shale Member (Carrara Formation), Delamaran (511.2 - 506.5 Ma)

• The Pahrump Hills Shale Member is poorly fossiliferous, but collections from different areas contain elements of both the Zacanthoidid and Albertella-Mexicella Zonules of the Albertella Zone.

• member-level stratigraphic resolution

Environment/lithology: paralic; lithology not reported

• The upper half of the member consists of a

•heterogeneous sequence of red, brown, and green

•mudstones and shales, chloritic and cryptalgal limestones,

•thin chloritic oolites, and pelloidal limestones.

Size classes: macrofossils, mesofossils, microfossils

Primary reference: A. R. Palmer and R. B. Halley. 1979. Physical Stratigraphy and Trilobite Biostratigraphy of the Carrara Formation (Lower and Middle Cambrian) in the Southern Great Basin. United States Geological Survey Professional Paper 1047:1-131 [W. Kiessling/M. Krause/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 149571: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 10.08.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Ptychopariida - Ptychopariidae
Volocephalina connexa
Volocephalina connexa Palmer and Halley 1979 trilobite
 Corynexochida - Zacanthoididae
Albertelloides rectimarginatus
Albertelloides rectimarginatus Palmer and Halley 1979 trilobite