Locality: Pit 11 spoil heap, Will-Kankakee Counties, Illinois.

Horizon: Carbondale Formation, Frances Creek Shale.

Biostratigraphy:

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

Material:

FMNH PR558: Fragmentary skull and fragmentary skeleton.

Note: With skin impressions and toepads.