ammonites
Paine's Creek at LeRoy, Chagrin Fm., Ohio (Devonian of the United States)

Where: Lake County, Ohio (41.7° N, 81.1° W: paleocoordinates 30.6° S, 29.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chagrin Shale Formation, Famennian (376.1 - 360.7 Ma)

• "U. Dev"

Environment/lithology: offshore; hematitic, gray shale

• "gray, ironstone concretions in gray shale matrix. nearshore? cratonic, adjacent to Appalachian Basin. BA2"

Primary reference: J. J. Sepkoski Jr. 1998. Rates of speciation in the fossil record. Philosophical Transaction of the Royal Society Biological Sciences 353(1366):315-326 [J. Sepkoski/M. Sommers/A. Clement] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 653: authorized by Jack Sepkoski, entered by Mike Sommers on 06.04.1999