Mammaliaformes Rowe 1988
Count: [g†g] 1c;24o;125f;1081g; ‡1o;6f;43g; †24o;301f;4057g;1s
   [crown] Class Mammalia Linnaeus, 1758 - mammals
  Count: [g†g] 24o;125f;1081g; ‡1o;6f;43g; †21o;294f;4034g;1s
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
    Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †21o;294f;4031g;1s
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
      Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †20o;277f;3936g;1s
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
        Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †20o;274f;3932g
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
          Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †18o;269f;3910g
             Sublegion Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
            Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †16o;262f;3884g
               Infralegion Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
              Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †16o;258f;3877g
                 [crown] Supercohort Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †16o;256f;3874g
                   Cohort Placentalia Owen, 1837 - placentals
                  Count: [g†g] 17o;108f;1005g; ‡1o;5f;40g; †12o;218f;3610g
                     Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                    Count: [g†g] 15o;103f;992g; ‡4f;34g; †12o;208f;3390g
                       Superorder Preptotheria McKenna, 1975
                      Count: [g†g] 15o;103f;992g; ‡4f;34g; †12o;204f;3358g
                         Grandorder Anagalida Szalay & McKenna, 1971 see Order Anagalida Szalay & McKenna, 1971
                        Count: [g†g] 2o;27f;445g; ‡11g; †2o;34f;835g
                           Mirorder Simplicidentata Weber, 1904
                          Count: [g†g] 1o;24f;429g; ‡10g; †1o;30f;745g
                             Order Rodentia Bowdich, 1821 - rodents
                            Count: [g†g] 24f;429g; ‡10g; †29f;733g
                               Suborder Hystricognatha Woods, 1976 see Suborder Hystricomorpha Brandt, 1855
                              Count: [g†g] 14f;53g; ‡3g; †9f;171g
                                 Infraorder Hystricognathi Tullberg, 1899
                                Count: [g†g] 14f;53g; ‡3g; †8f;170g
                                   Parvorder Caviida Bryant & McKenna, 1995 see Parvorder Caviomorpha Wood & Patterson, 1955
                                  Count: [g†g] 9f;40g; ‡3g; †3f;137g
                                     Superfamily Octodontoidea Waterhouse, 1839
                                    Count: [g†g] 3f;26g; ‡3g; †1f;59g
                                       Family Octodontidae Waterhouse, 1840 - octodonts
                                      Count: [g†g] 7g; †16g
                                         Subfamily Octodontinae Waterhouse, 1839
                                        Count: [g†g] 7g; †9g
                                           Tribe Ctenomyini Lesson, 1842 - tuco-tucos see Family Ctenomyidae Lesson, 1842
                                          Count: [g†g] 1g; †6g
                                             1 Genus †Palaeoctodon Rovereto, 1914
                                            Count: -
                                             2 Genus †Xenodontomys Kraglievich, 1927
                                            Count: -
                                             3 Genus †Eucoelophorus Ameghino, 1909
                                            Count: -
                                             4 Genus Ctenomys Blainville, 1826 - tuco-tucos
                                            Count: -
                                             5 Genus †Praectenomys Villarroel, 1975
                                            Count: -
                                             6 Genus †Actenomys Burmeister, 1888
                                            Count: -
                                             7 Genus †Megactenomys Rusconi, 1930
                                            Count: -