Kingdom Animalia Linnaeus, 1758 - animals
Phylum Craniata Linnaeus, 1758
see Subphylum Vertebrata Cuvier, 1812
Class Mammalia Linnaeus, 1758 - mammals
Subclass Theria Parker & Haswell, 1897
Infraclass Placentalia Owen, 1837
see Cohort Placentalia Owen, 1837
Order Perissodactyla Owen, 1848 - odd-toed ungulates
Family Equidae Gray, 1821 - horses, zebras, and asses