Mammalia - Rodentia - Eutypomyidae

Full reference: A. E. Wood and R. L. Konizeski. 1965. A new eutypomyid rodent from the Arikareean (Miocene) of Montana. Journal of Paleontology 39(3):492-496

Belongs to Eutypomys according to A. E. Wood and R. L. Konizeski 1965

Sister taxa: Eutypomys acares, Eutypomys hibernodus, Eutypomys inexpectatus, Eutypomys obliquidens, Eutypomys parvus, Eutypomys thomsoni

Type specimen: USNM 22819, a mandible (left lower jaw with P4-M2, the alveolus of M3, and a crushed and broken incisor). Its type locality is Tavenner Ranch 2, which is in an Arikareean terrestrial horizon in the Renova Formation of Montana.

Ecology: ground dwelling herbivore

Average measurements (in mm): p4 4.15 x 3.10, m1 3.89 x 3.63, m2 4.20 x 4.20