Species: gregorii (CAMP, 1930) LONG & MURRY, 1995
Etymology:

Referred material:

HECKERT, VINER & CARRANO, 2021

Locality: Blue Hills, St. Johns, Apache County, Arizona.

Horizon: Lower Petrified Forest Formation, Chinle Group.

Biostratigraphy:

Age: Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

USNM 18313: Skull and associted incomplte postcranial skeleton.

Note: Pathologic elements; Left humerus, right ulna, left femur and left fibula.