ammonites
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Diceratherium armatum Marsh 1875 (rhinoceros)

Mammalia - Perissodactyla - Rhinocerotidae

Synonyms: Aceratherium truquianum Cope 1879, Diceratherium gregorii Peterson 1920, Diceratherium lobatum Troxell 1921, Diceratherium pacificum Leidy 1871, Metacaenopus gregorii Peterson 1920, Rhinoceros pacificus Leidy 1871

Belongs to Diceratherium according to D. R. Prothero 2005

Sister taxa: Diceratherium annectens, Diceratherium matutinum, Diceratherium niobrarense, Diceratherium niobrarensis, Diceratherium persistens, Diceratherium radtkei, Diceratherium tridactylum, Diceratherium truquianum

Ecology: ground dwelling browser

Average measurements (in mm): P4 33.5 x 41.9, M1 42.2 x 44.1, M2 47.5 x 44.0, M3 46.0 x 50.0, p4 33.3 x 19.5, m1 32.9 x 19.7

Estimated body mass: 691.2 kg based on M3 length