Where: Lee County, Iowa (40.4° N, 91.4° W: paleocoordinates 12.2° S, 34.6° W)

• coordinate based on political unit

• hand sample-level geographic resolution

When: Keokuk Limestone Formation, Visean (346.7 - 330.9 Ma)

Environment/lithology: limestone

Primary reference: R. L. Batten. 1984. The Calcitic Wall in the Paleozoic Families Euomphalidae and Platyceratidae (Archeogastropoda). Journal of Paleontology 58(5):1186-1192 [L. Ivany/P. Wall/P. Wagner]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 75144: authorized by Linda Ivany, entered by Patrick Wall on 25.09.2007

Creative Commons license: CC BY (attribution)