Mammalia - Artiodactyla - Protoceratidae

Synonyms: Calops consors Marsh 1897, Calops cristatus Marsh 1894, Protoceras comptus Marsh 1894, Protoceras consors Marsh 1897, Protoceras cristatus Marsh 1894, Protoceras nasutus Marsh 1897

Full reference: O. C. Marsh. 1891. A horned artiodactyle (Protoceras celer) from the Miocene. The American Journal of Science and Arts, series 3 41(241):81-82

Belongs to Protoceras according to W. B. Scott 1895

Sister taxa: Protoceras neatodelpha, Protoceras skinneri

Ecology: ground dwelling browser

Average measurements (in mm): M1 12.8 x 13.7, M2 13.6 x 15.4, M3 14.1 x 15.4, m1 12.5 x 10.2, m2 12.6 x 10.8, m3 18.1 x 10.5, femur length 177.0, humerus length 149.0, metacarpal III length 89.0, metatarsal III length 107.0, radius length 143.5, scapula length 131.0, skull 221.0 x 86.1, ulna length 182.0

Estimated body mass: 19.0 kg based on femur length, humerus length, and ulna length