Vertebrata Cuvier, 1812 - vertebrates
Status: extant
   Gnathostomata
  Status: extant
     Teleostomi
    Status: extant
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
      Status: extant
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
        Status: extant
           Class Mammalia Linnaeus, 1758 - mammals
          Status: extant
             Subclass Theria Parker & Haswell, 1897
            Status: extant
               Theria of Metatherian-Eutherian grade
              Status: extant
                 Infraclass Eutheria Gill, 1872
                Status: extant
                   Order Rodentia Bowdich, 1821 - rodents
                  Status: extant
                     Suborder Sciurognathi (Tullberg, 1899) see Suborder Sciuromorpha Brandt, 1855
                    Status: extant
                       Infraorder Castorimorpha Wood, 1955 see Infraorder Castorimorphi
                      Status: extant
                         Family †Eutypomyidae Miller & Gidley, 1918
                        Status: fossil