Where: Young County, Texas (33.0° N, 98.7° W: paleocoordinates 5.9° S, 33.1° W)

• coordinate based on nearby landmark

When: Graham Formation, Virgilian (303.4 - 295.0 Ma)

• fossiliferous shale zone 25 to 30 feet above Bunger limestone member.

Environment/lithology: shale

Primary reference: W. Lee, C.O. Nickell, J.S. Williams and L.G. Henbest. 1938. Stratigraphic and Paleontologic Studies of the Pennsylvanian and Permian Rocks in North-Central Texas. The University of Texas Publication (3801) [M. Patzkowsky/M. Patzkowsky] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 1058: authorized by Tom Olszewski, entered by Tom Olszewski on 11.03.1999