Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Infraclass Eutheria Gill, 1872
       Cohort Ferungulata
         Superorder Paraxonia (Marsh, 1884)
           Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
             Suborder Ruminantia Scopoli, 1777
               1 Infraorder Tragulina Flower, 1883
               2 Infraorder Pecora Linnaeus, 1758