Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Infraclass Eutheria Gill, 1872
       Magnorder Boreoeutheria Springer & de Jong, 2001
         Superorder Laurasiatheria Waddell, Okada & Hasegawa, 1999
           Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
             1 Suborder Whippomorpha
             2 Suborder Ruminantia Scopoli, 1777
             3 Suborder Suina Gray, 1868
             4 Suborder Tylopoda "Illiger, 1811" [monotypic]