Where: Russell County, Kentucky (36.9° N, 85.1° W: paleocoordinates 20.6° S, 32.9° W)

• coordinate based on nearby landmark

When: Gnathodus texanus conodont zone, Fort Payne Chert Formation, Chadian to Chadian (346.7 - 340.0 Ma)

• JA: late Osagean; the Fort Payne falls entirely within the Gnathodus texanus zone (Ausich and Meyer 1990), which in turn is Chadian to Arundian (Work and Mason 2004)

Environment/lithology: marine; wackestone

Primary reference: D. L. Meyer and W. I. Ausich. 1997. Morphologic variation within and among populations of the camerate crinoid Agaricocrinus (Lower Mississippian, Kentucky and Tennessee): Breaking the spell of the mushroom. Journal of Paleontology 71(5):896-917 [J. Alroy/M. Sommers/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 67: authorized by John Alroy, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)