Where: Searcy County, Arkansas (35.9° N, 94.0° W: paleocoordinates 12.2° S, 35.6° W)

When: Fayetteville Formation, Chesterian (335.5 - 323.2 Ma)

Environment/lithology: marine; poorly lithified claystone and lithified, nodular, calcareous limestone

Preservation: concretion

Primary reference: B. Kröger and R. H. Mapes. 2005. Revision of some common Carboniferous genera of North American orthocerid nautiloids. Journal of Paleontology 79(5):1002-1011 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92182: authorized by Björn Kröger, entered by Björn Kröger on 03.11.2009

Creative Commons license: CC BY (attribution)