Genus: Captorhinus COPE, 1896
Etymology: Greek, kapto, "snatch at food" and Greek, rhin- (rhis), “snout”, + us: Snatching snout.

Species: aguti (COPE, 1882) COPE, 1896
Etymology:

Referred material:

 

MOONEY, MAHO, PHILP, BEVITT & REISZ, 2025

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.

Biostratigraphy:

Age: Middle Leonardian stage, upper Rotliegendes Epoch, Early Permian.

Material:

OMNH 52541: Skull, cervical vertebrae, ribs and skin impressions.