Genus: Microleter TSUJI, MÜLLER, & REISZ, 2010
Etymology: Greek, micro, "small" and Greek, leter, a frequently used suffix for small parareptiles referring to the small size and group affinity of the fossil.

Species: mckinzieorum TSUJI, MÜLLER, & REISZ, 2010
Etymology: In honor of Mr. Mark McKinzie and his family.

Holotype: OMNH 73106

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: Wellington Formation (Garber Formation), Summer Group, Arbuckle limestone, (Probably equivalent to the Arroyo Formation of Texas).


Age: Leonardian Stage, Lower Rotliegendes Epoch, Early Permian.

Material: Complete partially articulated skull wiht attached anterior vertebrae.