Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812
     Class Mammalia Linnaeus, 1758 - mammals
       Subclass Theria Parker & Haswell, 1897
         1 Infraclass Marsupialia Jameson, 1818 see Cohort Marsupialia Jameson, 1818
         2 Infraclass Placentalia Owen, 1837 see Cohort Placentalia Owen, 1837