Also known as Snowy Range Fm., Park County, Wyoming - Sumrall et al. 1997

Where: Park County, Wyoming (45.0° N, 109.9° W: paleocoordinates 7.3° S, 82.2° W)

When: Dunderbergia trilobite zone, ? Dry Creek Member (Snowy Range Formation), Steptoean (497.0 - 493.5 Ma)

• PJW: This should be the lower half of the Dry Creek Member, which is Dunderbergia zone.

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; lithified, hardground conglomerate

Size class: macrofossils

Collection methods: All specimens were found on slabs and cut down in the lab. Most of the echinoderm units were associated with hard substrates formed by flat-pebble conglomerate beds,columnar stromatolites and associated grainstones, or thrombolitic mounds with borings. Most productive beds were apparently deposited by storms, but the exact environment is not listed.

Primary reference: C. D. Sumrall, J. Sprinkle, and T. E. Guensburg. 1997. Systematics and paleoecology of Late Cambrian echinoderms from the western United States. Journal of Paleontology 71(6):1091-1109 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9516: authorized by Mark Patzkowsky, entered by Phil Borkow on 22.03.2001, edited by Alex Lin

Creative Commons license: CC BY (attribution)