ammonites
Ophiomys mcknighti Gustafson 1978 (mouse)

Mammalia - Rodentia - Cricetidae

Alternative combination: Mimomys mcknighti

Full reference: E. P. Gustafson. 1978. Bulletin of the Museum of Natural History, University of Oregon 23

Belongs to Ophiomys according to R. A. Martin et al. 2002

Sister taxa: Mimomys dakotaensis, Mimomys davakosi, Mimomys occitanus, Mimomys panacaensis, Mimomys pliocaenicus, Mimomys virginianus, Cosomys primus, Ophiomys parvus, Ophiomys taylori, Ophiomys fricki, Ophiomys magilli, Cseria parkeri

Ecology: ground dwelling herbivore

Average measurements (in mm): m1 2.70 x 1.30

Estimated body mass: 110.7 g based on m1 length