Genus: Dinnetherium JENKENS, CROMPTON & DOWNS, 1983
Etymology: Navajo, Dinne, “Navajo people” and Greek, therion, “beast, mammal”: Navajo’s Wild Beast.

Species: nezorum JENKENS, CROMPTON & DOWNS, 1983
Etymology:

Holotype: MNA V3221

Locality: Along the Adeii Eehii Cliffs about 30 miles south-southeast of Tuba City, Navajo County, Arizona.

Horizon: Kayenta Formation.

Biostratigraphy:

Age: ?Sinemurian-Pliesbachian Stage, Middle Lias Epoch, Middle Early Jurassic.

Material: A partial right mandible with M2-5.

Referred material:

MCZ V20870-20877: