GODFREY, 2003

Locality: Mazon Creek area, Will-Kankakee counties, Illinois.

Horizon: Carbondale Formation, Frances Creek Shale.

Biostratigraphy:

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

Material:

ROM 47554: Fragmentary skull and skeleton of a juvenile.
Note: Colon impressions.