near Prairie du Chien (Ordovician of the United States)

Where: Crawford County, Wisconsin (43.0° N, 91.1° W: paleocoordinates 21.4° S, 76.0° W)

• coordinate based on nearby landmark

When: Oneota Formation, Tremadocian (485.4 - 477.7 Ma)

Environment/lithology: shallow subtidal; dolomite

Size classes: macrofossils, mesofossils

Preservation: cast, original aragonite

Primary reference: E. O. Ulrich, A. F. Foerste, and A.K. Miller. 1943. Ozarkian and Canadian cephalopods. Part II, Brevicones. Geological Society of America Special Papers 49:1-240 [P. Wagner/P. Wagner/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 189293: authorized by Björn Kröger, entered by Björn Kröger on 10.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ellesmerocerida - Ellesmeroceratidae
Buehleroceras apertum Ulrich et al. 1943
Burenoceras ungulatum Ulrich et al. 1943
Burenoceras oneotense Ulrich et al. 1943
Levisoceras ellipticum Ulrich et al. 1943