Phylum [Vertebrata] (Lamarck, 1801)
   Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theria Parker & Haswell, 1897
       Infraclass Eutheria Gill, 1872
         1 Order †Proteutheria (Romer, 1966)
         2 Cohort Edentata Cuvier, 1798
         3 Cohort Epitheria McKenna, 1975