CARROLL & GASKILL, 1978

Locality: Pit 1 or 6 of Peabody Coal Company, approximately at county line between Will and Grundy Counties, Illinois.

Horizon: Carbondale Formation, Frances Creek Shale.

Biostratigraphy:

Age: Myachkovskian Stage, Westphalian D, Lower Upper Silesian, Desmoniensean, upper Moscovian Epoch, Late Pennsylvanian (Late Carboniferous).

Material:

FM-PR 981: Fragmentary skull and fragmentary skeleton.