Gen. Sp indet.

PARDO & MANN, 2026

Localityi: Mazon Creek near Morris, Grundy County, 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 PF 16088: Early feeding stage.