Where: Young County, Texas (33.1° N, 98.6° W: paleocoordinates 5.8° S, 33.0° W)
• coordinate based on nearby landmark
When: Graham Formation, Virgilian (303.4 - 295.0 Ma)
• fossil zone 16 Gb, marine shale about 40 feet above Home Creek limestone of Plummer and Moore (top member of underlying Caddo Creek formation).
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 1053: authorized by Tom Olszewski, entered by Tom Olszewski on 11.03.1999