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 Artiodactyla Owen, 1848 - even-toed ungulates
see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
Suborder Ruminantia Scopoli, 1777
Family Giraffidae Gray, 1821 - okapi and giraffe
Genus †Prolibytherium Arambourg, 1961