Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Infraclass Metatheria Huxley, 1880
       Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
         1 Superfamily Didelphoidea Gray, 1821
         2 Superfamily Dasyuroidea (Goldfuss, 1820) see Family Dasyuridae Goldfuss, 1820
         3 Superfamily Perameloidea Gray, 1825
         4 Superfamily Caenolestoidea Trouessart, 1898
         5 Superfamily Phalangeroidea Thomas, 1888 see Suborder Phalangeriformes Szalay, 1982