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 Myomorpha Brandt, 1855 see Infraorder Myomorphi
                                 Infraorder Myodonta Schaub, 1955 see Infraorder Myomorphi
                                   Superfamily Muroidea Batsch, 1788
                                     Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
                                       Subfamily Sigmodontinae Wagner, 1843
                                         Tribe Oryzomyini Vorontzov, 1959
                                           01 Genus ‡Megalomys Trouessart, 1881 - West Indian giant rice rats
                                           02 Genus Oryzomys Baird, 1857 - rice rats
                                           03 Genus Nesoryzomys Heller, 1904 - Galapagos rice rats
                                           04 Genus Melanomys Thomas, 1902
                                           05 Genus Sigmodontomys Allen, 1897
                                           06 Genus Nectomys Peters, 1861 - Neotropical water rats
                                           07 Genus Amphinectomys Malygin, 1994
                                           08 Genus Oligoryzomys Bangs, 1900
                                           09 Genus Neacomys Thomas, 1900 - bristly mice
                                           10 Genus Zygodontomys Allen, 1897 - cane mice
                                           11 Genus Lundomys Voss & Carleton, 1993
                                           12 Genus Holochilus Brandt, 1835 - web-footed rats
                                           13 Genus Pseudoryzomys Hershkovitz, 1959
                                           14 Genus Microakodontomys Hershkovitz, 1993
                                           15 Genus Oecomys Thomas, 1906 - bicolored rice rats
                                           16 Genus Microryzomys Thomas, 1917
                                           17 Genus Scolomys Anthony, 1924 - spiny mouse