Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates
     Superclass Homotherma
       Class Mammalia Linnaeus, 1758 - mammals
         Subclass Theria Parker & Haswell, 1897
           Infraclass Eutheria Gill, 1872
             01 Order Insectivora Bowdich, 1821 - insectivores see Superorder Insectivora Bowdich, 1821
             02 Order Chiroptera Blumenbach, 1779 - bats
             03 Order Primates Linnaeus, 1758 - primates
             04 Order Edentata Vicq-d'Azyr, 1792 see Order Xenarthra Cope, 1889
             05 Order Rodentia Bowdich, 1821 - rodents
             06 Order Lagomorpha Brandt, 1855 - lagomorphs
             07 Order Cetacea Brisson, 1762 - whales, dolphins, and porpoises see Infraorder Cetacea Brisson, 1762
             08 Order Carnivora Bowdich, 1821 - carnivores
             09 Order Tubulidentata Huxley, 1872 - aardvark
             10 Order Proboscidea Owen, 1859 - elephants
             11 Order Perissodactyla Owen, 1848 - odd-toed ungulates
             12 Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997