Kingdom [Animalia] Linnaeus, 1758 - animals
Subkingdom Metazoa Haeckel, 1874
see Kingdom Animalia Linnaeus, 1758
Division Eumetazoa Butschli, 1910
see Subkingdom Eumetazoa Butschli, 1910
Subdivision Bilateralia
Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Class Mammalia Linnaeus, 1758 - mammals
Subclass Eutheria Gill, 1872
see Infraclass Eutheria Gill, 1872
Superorder Mesaxonia (Marsh, 1884)
Order Perissodactyla Owen, 1848 - odd-toed ungulates
Suborder Hippomorpha Wood, 1937
Superfamily †Brontotherioidea Marsh, 1873
Family †Brontotheriidae Marsh, 1873