Where: Grant County, Wisconsin (43.1° N, 90.5° W: paleocoordinates 21.7° S, 75.7° W)
• coordinate estimated from map
When: Oneota Dolomite Formation, Tremadocian (485.4 - 477.7 Ma)
• formation-level stratigraphic resolution
Environment/lithology: dolomite
Size classes: macrofossils, mesofossils
Preservation: recrystallized, 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 189335: authorized by Björn Kröger, entered by Björn Kröger on 12.10.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Clarkoceras expansum Ulrich et al. 1943
Clarkoceras gracile Ulrich et al. 1943
Clarkoceras luthei Calvin 1892 |