Where: Ripley County, Missouri (36.6° N, 90.8° W: paleocoordinates 24.5° S, 80.7° W)

• coordinate based on nearby landmark

When: Cotter Formation, Tulean to Tulean (480.8 - 470.0 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Preservation: cast, original aragonite, replaced with calcite

Primary reference: E. O. Ulrich, A. F. Foerste, A. K. Miller and W. M. Furnish. 1942. Ozarkian and Canadian cephalopods, Part I: Nautilicones. Geological Society of America Special Papers 37:1-157 [B. Kröger/B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98455: authorized by Björn Kröger, entered by Björn Kröger on 07.10.2010

Creative Commons license: CC BY (attribution)