Where: Eau Claire County, Wisconsin (44.8° N, 91.5° W: paleocoordinates 20.1° S, 79.5° W)

• local area-level geographic resolution

When: Crepicephalus trilobite zone, Dresbachian (497.0 - 485.4 Ma)

• AGE: Dresbachian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data (= Crepicephalus zone).

Environment/lithology: marine; lithified sandstone

Preservation: cast

Collection methods: bulk,

• Collected during the summer of 1978 and stored at the Geology Musuem, Unviversity of Wisconsin - Madison, Department of Geology and Geophysics.

Primary reference: G. O. Gunderson. 1993. New genus of Late Cambrian gastropod. Journal of Paleontology 67(6):1083-1084 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 8233: authorized by Mark Patzkowsky, entered by Phil Borkow on 30.06.2000

Creative Commons license: CC BY (attribution)