Groom Range, Carrara Fm, Red Pass Limestone Mbr. (USGS 3695-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, Red Pass Limestone Member (Carrara Formation), Delamaran (511.2 - 506.5 Ma)

• The upper few meters of the member are locally rich in trilobites of the Zacanthoidid Zonule of the Albertella Zone (p. 59) in the Groom Range and the Nevada Test Site.

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; lime mudstone

• The Red Pass Limestone Member generally forms a

•prominent cliff and consists of burrowed, oncolitic, and

•skeletal-fragment lime mudstones, oolite, and a variety of

•laminated lime mudstones and fenestral 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 149564: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 09.08.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Corynexochida - Dolichometopidae
Poliella germana
Poliella germana Resser 1939 trilobite
 Corynexochida - Dorypygidae
Kootenia germana
Kootenia germana Resser 1939 trilobite
 Corynexochida - Zacanthoididae
Zacanthoides cf. alatus, Ptarmiganoides hexacantha
Ptarmiganoides hexacantha Palmer and Halley 1979 trilobite
 Ptychopariida -
Ptychopariida sp.
Ptychopariida sp. Swinnerton 1915 trilobite
as "Ptychopariid sp. undet. 7"
 Ptychopariida - Ptychopariidae
"Nyella granosa" = Palmerara granosa
"Nyella granosa" = Palmerara granosa Resser 1939 trilobite