Mammaliaformes Rowe 1988
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
             Sublegion Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
               Infralegion Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
                 [crown] Supercohort Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                   Cohort Placentalia Owen, 1837 - placentals
                     Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                       Superorder Preptotheria McKenna, 1975
                         Grandorder Anagalida Szalay & McKenna, 1971 see Order Anagalida Szalay & McKenna, 1971
                           Mirorder Simplicidentata Weber, 1904
                             Order Rodentia Bowdich, 1821 - rodents
                               Suborder Hystricognatha Woods, 1976 see Suborder Hystricomorpha Brandt, 1855
                                 Infraorder Hystricognathi Tullberg, 1899
                                   Parvorder Caviida Bryant & McKenna, 1995 see Parvorder Caviomorpha Wood & Patterson, 1955
                                     Superfamily Cavioidea Fischer de Waldheim, 1817
                                       Family Caviidae Fischer de Waldheim, 1817 - cavies and Patagonian "hares"
                                         Subfamily Caviinae Fischer de Waldheim, 1817
                                           01 Genus †Neoprocavia Ameghino, 1889
                                           02 Genus †Allocavia Pascual, 1962
                                           03 Genus †Palaeocavia Ameghino, 1889
                                           04 Genus †Neocavia Kraglievich, 1932
                                           05 Genus †Dolicavia Ameghino, 1916
                                           06 Genus †Macrocavia Rusconi, 1933
                                           07 Genus †Caviops Ameghino, 1908
                                           08 Genus †Pascualia Ortega Hinojosa, 1963
                                           09 Genus Galea Meyen, 1833, nom. illeg. - yellow-toothed cavies
                                           10 Genus Microcavia Gervais & Ameghino, 1880 - mountain cavies
                                           11 Genus Cavia Pallas, 1766 - cavies
                                           12 Genus Kerodon Cuvier, 1825 - rock cavy