MAY & HALL, 2002
Locality: Kirby Quarry, Noble County, Oklahoma.
Horizon: Wellington Formation (Garber Formation), Summer Group, Arbuckle limestone, (Probably equivalent to the Arroyo Formation of Texas).
Biostratigraphy:
Age: Leonardian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
OMNH 58183: Caudal and dorsal vertebrae