Species: periallus BAIRD & CARROLL, 1968
Etymology:

Holotype: PU 16982

Locality: Cove northeast of Cape Linzee, north-northeast of Port Hood, Inverness County, Nova Scotia Province, Canada.

Horizon: Middle Port Hood Formation.

Biostratigraphy:

Age: Early Pennsylvanian, Middle Carboniferous

Material: Fragmentary skull and fragmentary skeleton.