Species: carrolli ANDERSON & REISZ, 2003
Etymology: In honor of Dr. Robert Carroll.
Holotype: OMNH 52364
Locality: Fort Sill, OMNH Locality V51, Dolese Brothers limestone quarry at Richards Spur, Fissure Fills, just west of U.S. Highways 62 & 281, 10.5 miles south of Apache, 6 miles north of Fort Sill, SW 1/2, Sec. 31, T4N, R11W, Comanche County, Oklahoma.
Horizon: Willington Formation (Garber Formation), Summer Group, Arbuckle limestone, (Probably equivalent to the Arroyo Formation of Texas).
Biostratigraphy:
Age: Middle Leonardian stage, upper Rotliegendes Epoch, Early Permian.
Material: Incomplete right dentary and articulated medial bones.