Where: McColloch County, Texas (31.5° N, 99.4° W: paleocoordinates 1.9° S, 31.1° W)

• coordinate based on nearby landmark

When: Pueblo Formation, Virgilian to Virgilian (303.7 - 286.0 Ma)

• in Drake's bed No.13 ("limestone with yellow chert"), the Stockwether limestone member of Plummer and Moore.

Environment/lithology: cherty/siliceous carbonate

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 3801:1-252 [M. Patzkowsky/M. Patzkowsky/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 1110: authorized by Tom Olszewski, entered by Tom Olszewski on 12.03.1999

Creative Commons license: CC BY (attribution)