Invalid names: Dinoceras agreste Marsh 1885 [synonym], Dinoceras cuneum Marsh 1885 [synonym], Dinoceras distans Marsh 1885 [synonym], Dinoceras lacustre Marsh 1872 [synonym], Dinoceras laticeps Marsh 1873 [synonym], Dinoceras lucare Marsh 1873 [synonym], Dinoceras mirabile Marsh 1872 [synonym], Dinoceras reflexum Marsh 1885 [synonym], Elachoceras parvum Scott 1886 [synonym], Loxolophodon furcatus Cope 1872 [synonym], Tinoceras affine Marsh 1885 [synonym], Tinoceras crassifrons Marsh 1885 [synonym], Tinoceras grande Marsh 1872 [synonym], Tinoceras hians Marsh 1885 [synonym], Tinoceras jugum Marsh 1885 [synonym], Tinoceras latum Marsh 1885 [synonym], Tinoceras pugnax Marsh 1885 [synonym], Tinoceras vagans Marsh 1885 [synonym], Uintamastix atrox Leidy 1872 [synonym], Uintatherium alticeps Scott 1886 [synonym], Uintatherium latifrons Marsh 1885 [synonym], Uintatherium leidianum Osborn et al. 1878 [synonym], Uintatherium princeps Osborn et al. 1878 [synonym], Uintatherium robustum Leidy 1872 [synonym], Uintatherium segne Marsh 1885 [synonym]