Genus: Dimacrodon OLSON & BEERBOWER, 1953
Etymology: Greek, di-, “two”, Greek, makros, “long” and Greek, odon, “tooth”: Double long tooth.

Species: hottoni OLSON & BEERBOWER, 1953
Etymology: In honor of Nicholas Hotton III of the United Museum of Natural History

Holotype: FMNH (CNHM) UR 146

Locality: Sublocality HA, Pease River, Hardeman County, Texas.

Horizon: Flowerpot Member, Upper San Angelo Formation, Lower Pease River Group.

Biostratigraphy: Land-vertebrate faunachron lower E.

Age: Lower Guadalupian Stage, Upper Rotliegendes Epoch, Early Permian.

Material: A pair of partially complete lower jaw.

Referred material:

FMNH (CNHM) UR 145: Fragments of symphysis of lower jaw with root of large canine.

FMNH (CNHM) UR 147: Fragments of lower jaw and fragmentary skull.