Where: Marion County, Arkansas (36.2° N, 92.7° W: paleocoordinates 23.8° S, 79.1° W)

• coordinate based on nearby landmark

When: Powell Formation, Floian (477.7 - 470.0 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Preservation: cast, original aragonite, replaced with dolomite

Primary reference: E. O. Ulrich, A. F. Foerste, A. K. Miller and W. M. Furnish. 1944. Ozarkian and Canadian cephalopods, longicones and summary. Geological Society of America Special Paper 58:1-226 [P. Wagner/P. Wagner/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 101384: authorized by Björn Kröger, entered by Björn Kröger on 21.12.2010, edited by Pete Wagner

Creative Commons license: CC BY (attribution)