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

Where: Crook County, Wyoming (44.6° N, 104.4° W: paleocoordinates 11.1° S, 82.8° W)

• local area-level geographic resolution

When: Illaenurus zone, Deadwood Formation, Trempealeauan (501.0 - 488.3 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] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9768: authorized by Mark Patzkowsky, entered by Phil Borkow on 18.01.2001