Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Teleostomi Bonaparte, 1836
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. - amniotes see Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
           Mammalia Linnaeus, 1758 - mammals
             Theria Parker & Haswell, 1897
               Theria of Metatherian-Eutherian grade
                 Eutheria Gill, 1872
                   Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
                     Tylopoda "Illiger, 1811"
                       Cameloidea Gray, 1821
                         Camelidae Gray, 1821 - camels, guanaco, llama, alpaca, and vicuña