Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Infraclass Eutheria Gill, 1872
       Cohort Ferungulata
         Superorder Paenungulata Simpson, 1945 see Grandorder Paenungulata Simpson, 1945
           1 Order †Pantodonta Cope, 1873
           2 Order †Dinocerata Marsh, 1873
           3 Order †Pyrotheria Ameghino, 1895
           4 Order Proboscidea Owen, 1859 - elephants
           5 Order †Embrithopoda Andrews, 1906
           6 Order Hyracoidea Huxley, 1869 - hyraxes
           7 Order Sirenia Gill, 1872 - sea cows