Species: cordatus COPE, 1881
Etymology:

Referred material:

CARROLL 1968

Locality: Archer City Bone Bed, Archer City, Archer County, Texas.

Horizon: Archer City Formation (formerly Putnam Formation), Wichita Group.

Biostratigraphy:

Age: Leonardian series, Upper Rotilegendes Epoch, Early Permian.

Material:

MCZ 3302: Anterior portion of skeleton articulated with skull, including vertebral column and ribs, pectoral girdle and forelimbs, dermal armor.