Mammaliaformes Rowe 1988, nom. cl. inval. see Clade Mammaliaformes Rowe 1988 [Rowe 2020]
   [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 Arvicolinae Gray, 1821 - voles
                                         Tribe Arvicolini Gray, 1821
                                           01 Genus †Mimomys Forsyth Major, 1902
                                           02 Genus †Prosomys Shotwell, 1956
                                           03 Genus †Cosomys Wilson, 1932
                                           04 Genus †Ophiomys Hibbard & Zakrzewski, 1967
                                           05 Genus †Ogmodontomys Hibbard, 1941
                                           06 Genus †Kilarcola Kotlia, 1985
                                           07 Genus †Hibbardomys Zakrzewski, 1984
                                           08 Genus †Cromeromys Zazhigin, 1980
                                           09 Genus Arvicola Lacépède, 1799 - water voles
                                           10 Genus ‡Tyrrhenicola Forsyth Major, 1905 - Tyrrhenian vole
                                           11 Genus Microtus Schrank, 1798 - voles
                                           12 Genus Lemmiscus Thomas, 1912 - sagebrush vole
                                           13 Genus Blanfordimys Argyropulo, 1933
                                           14 Genus Chionomys Miller, 1908
                                           15 Genus Proedromys Thomas, 1911
                                           16 Genus Volemys Zagorodnyuk, 1990
                                           17 Genus †Villanyia Kretzoi, 1956
                                           18 Genus Lagurus Gloger, 1841 - steppe lemmings
                                           19 Genus Eolagurus Argyropulo, 1946 - yellow steppe lemmings
                                           20 Genus †Jordanomys Haas, 1966
                                           21 Genus †Kalymnomys von Koenigswald, Fejfar & Tchernov, 1992
                                           22 Genus †Nemausia Chaline & Laborier, 1981
                                           23 Genus †Huananomys Zheng, 1992