Phylum [Vertebrata] Lamarck, 1801 see Infraphylum Vertebrata Lamarck, 1801
   Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theria Parker & Haswell, 1897
       Infraclass Eutheria Gill, 1872
         Cohort Epitheria McKenna, 1975
           Superorder Ungulata Linnaeus, 1766
             Order Perissodactyla Owen, 1848 - odd-toed ungulates
               Suborder Ceratomorpha Wood, 1937
                 Family Rhinocerotidae Gray, 1821 - rhinoceroses
                   1 Genus ‡Coelodonta Bronn, 1831 - woolly rhinoceros
                   2 Genus †Elasmotherium Fischer, 1808
                   3 Genus †Teleoceras Hatcher, 1894
                   4 Genus †Trigonias Lucas, 1900