Species: branchialis MOODIE, 1912
Etymology:
Holotype: YPM 801 (222) 5
Locality: Mazon Creek, 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: Mandible, and some rather indefinite body impressions.