SM 7c, Deadwood Form., Bear Lodge Mountains, Wyoming - Stitt and Straatmann 1997 (Cambrian of the United States)

Where: Meade County, South Dakota (44.6° N, 104.4° W: paleocoordinates 11.3° S, 82.0° W)

• local area-level geographic resolution

When: Illaenurus zone, Deadwood Formation, Trempealeauan (492.5 - 485.4 Ma)

• Sample could not be placed in a stratigraphic context and so footage is uncertain.

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface

• The Black Hills is a domal basement uplift formed during the Laramide Orogeny.

Collection methods: Collected by Christina Lochman-Balk and her students. Only trilobites are included in the collection.

Primary reference: J. H. Stitt and W. M. Straatmann. 1997. Trilobites from the upper part of the Deadwood Formation (Upper Franconian and Trempealeauan stages, Upper Cambrain), Black Hills, South Dakota. Journal of Paleontology 71(1):86-102 [M. Patzkowsky/P. Borkow/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9773: authorized by Mark Patzkowsky, entered by Phil Borkow on 18.01.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• Abundances are listed as cranidia-pygidia-librigenae-hypostomes (C-P-L-H), for polymeroid trilobites, cephala-pygidia (C-P) for agnostid trilobites, and number of valves for brachiopods.
Show authors, comments, and common names
Trilobita
 Ptychopariida - Plethopeltidae
"Plethometopus sp." = Plethopeltis
"Plethometopus sp." = Plethopeltis Raymond 1913 trilobite
(0-1-0-0)