 Class Mammalia Linnaeus, 1758 - mammals
 Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
 Order Rodentia Bowdich, 1821 - rodents
     Suborder Sciurognathi (Tullberg, 1899)
 see Suborder Sciuromorpha Brandt, 1855
 Suborder Sciurognathi (Tullberg, 1899)
 see Suborder Sciuromorpha Brandt, 1855
       Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
 Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
         Subfamily Arvicolinae Gray, 1821 - voles
 Subfamily Arvicolinae Gray, 1821 - voles
           Genus Microtus Schrank, 1798 - voles
 Genus Microtus Schrank, 1798 - voles
             01 Microtus abbreviatus Miller, 1899 - insular vole
 01 Microtus abbreviatus Miller, 1899 - insular vole
             02 Microtus agrestis (Linnaeus, 1761) - field vole
 02 Microtus agrestis (Linnaeus, 1761) - field vole
             03 Microtus arvalis (Pallas, 1779) - common vole
 03 Microtus arvalis (Pallas, 1779) - common vole
             04 ‡Microtus bavaricus Konig, 1962
 04 ‡Microtus bavaricus Konig, 1962
             05 Microtus breweri (Baird, 1858) - beach vole
 05 Microtus breweri (Baird, 1858) - beach vole
             06 Microtus cabrerae Thomas, 1906 - Cabrera's vole
 06 Microtus cabrerae Thomas, 1906 - Cabrera's vole
             07 †Microtus brecciensis (Giebel, 1847)
 07 †Microtus brecciensis (Giebel, 1847)
             08 Microtus californicus (Peale, 1848) - California vole
 08 Microtus californicus (Peale, 1848) - California vole
             09 Microtus canicaudus Miller, 1897 - grey-tailed vole
 09 Microtus canicaudus Miller, 1897 - grey-tailed vole
             10 Microtus chrotorrhinus (Miller, 1894) - rock vole
 10 Microtus chrotorrhinus (Miller, 1894) - rock vole
             11 Microtus daghestanicus Shidlovsky, 1919
 11 Microtus daghestanicus Shidlovsky, 1919
             12 Microtus duodecimcostatus de Selys-Longchamps, 1839
 12 Microtus duodecimcostatus de Selys-Longchamps, 1839
             13 Microtus evoronensis Kovalskaya & Sokolov, 1980
 13 Microtus evoronensis Kovalskaya & Sokolov, 1980
             14 Microtus felteni Malec & Storch, 1963
 14 Microtus felteni Malec & Storch, 1963
             15 Microtus fortis Büchner, 1889 - reed vole
 15 Microtus fortis Büchner, 1889 - reed vole
             16 Microtus gerbei Gerbe, 1879
 16 Microtus gerbei Gerbe, 1879
             17 Microtus gregalis (Pallas, 1779) - narrow-headed vole
 17 Microtus gregalis (Pallas, 1779) - narrow-headed vole
             18 Microtus guatemalensis Merriam, 1898
 18 Microtus guatemalensis Merriam, 1898
             19 Microtus guentheri (Danford & Alston, 1880) - Gunther's vole
 19 Microtus guentheri (Danford & Alston, 1880) - Gunther's vole
             20 Microtus hyperboreus Vinogradov, 1934
 20 Microtus hyperboreus Vinogradov, 1934
             21 Microtus irani Thomas, 1921 - Persian vole
 21 Microtus irani Thomas, 1921 - Persian vole
             22 Microtus irene (Thomas, 1911)
 22 Microtus irene (Thomas, 1911)
             23 Microtus juldaschi (Severtzov, 1879)
 23 Microtus juldaschi (Severtzov, 1879)
             24 Microtus kermanensis Roguin, 1988 - Baluchistan vole
 24 Microtus kermanensis Roguin, 1988 - Baluchistan vole
             25 Microtus kirgisorum Ognev, 1950 - Tien Shan vole
 25 Microtus kirgisorum Ognev, 1950 - Tien Shan vole
             26 Microtus leucurus (Blyth, 1863), nom. illeg.
 26 Microtus leucurus (Blyth, 1863), nom. illeg.
             27 Microtus limnophilus Büchner, 1889
 27 Microtus limnophilus Büchner, 1889
             28 Microtus longicaudus (Merriam, 1888) - long-tailed vole
 28 Microtus longicaudus (Merriam, 1888) - long-tailed vole
             29 Microtus lusitanicus Gerbe, 1879
 29 Microtus lusitanicus Gerbe, 1879
             30 Microtus majori Thomas, 1906
 30 Microtus majori Thomas, 1906
             31 Microtus maximowiczii Schrenk, 1859
 31 Microtus maximowiczii Schrenk, 1859
             32 Microtus mexicanus (Saussure, 1861) - Mexican vole
 32 Microtus mexicanus (Saussure, 1861) - Mexican vole
             33 Microtus middendorffi (Poliakov, 1881)
 33 Microtus middendorffi (Poliakov, 1881)
             34 Microtus miurus Osgood, 1901 - singing vole
 34 Microtus miurus Osgood, 1901 - singing vole
             35 Microtus mongolicus Radde, 1861 - Mongolian vole
 35 Microtus mongolicus Radde, 1861 - Mongolian vole
             36 Microtus montanus (Peale, 1848) - montane vole
 36 Microtus montanus (Peale, 1848) - montane vole
             37 Microtus montebelli Milne-Edwards, 1872 - Japanese grass vole
 37 Microtus montebelli Milne-Edwards, 1872 - Japanese grass vole
             38 Microtus mujanensis Orlov & Kovalskaya, 1978
 38 Microtus mujanensis Orlov & Kovalskaya, 1978
             39 Microtus multiplex (Fatio, 1905)
 39 Microtus multiplex (Fatio, 1905)
             40 Microtus nasarovi (Shidlovsky, 1938)
 40 Microtus nasarovi (Shidlovsky, 1938)
             41 Microtus oaxacensis Goodwin, 1966 - Tarabundi vole
 41 Microtus oaxacensis Goodwin, 1966 - Tarabundi vole
             42 Microtus obscurus (Eversmann, 1841)
 42 Microtus obscurus (Eversmann, 1841)
             43 Microtus ochrogaster (Wagner, 1842) - prairie vole
 43 Microtus ochrogaster (Wagner, 1842) - prairie vole
             44 Microtus oeconomus (Pallas, 1776) - root vole
 44 Microtus oeconomus (Pallas, 1776) - root vole
             45 Microtus oregoni (Bachman, 1839) - creeping vole
 45 Microtus oregoni (Bachman, 1839) - creeping vole
             46 Microtus pennsylvanicus (Ord, 1815) - meadow vole
 46 Microtus pennsylvanicus (Ord, 1815) - meadow vole
             47 Microtus pinetorum (Le Conte, 1830) - pine vole
 47 Microtus pinetorum (Le Conte, 1830) - pine vole
             48 Microtus quasiater Coues, 1874
 48 Microtus quasiater Coues, 1874
             49 Microtus richardsoni (de Kay, 1842) - American water vole
 49 Microtus richardsoni (de Kay, 1842) - American water vole
             50 Microtus rossiaemeridionalis Ognev, 1924
 50 Microtus rossiaemeridionalis Ognev, 1924
             51 Microtus sachalinensis Vasin, 1955 - Sakhalin vole
 51 Microtus sachalinensis Vasin, 1955 - Sakhalin vole
             52 Microtus savii (de Selys-Longchamps, 1838)
 52 Microtus savii (de Selys-Longchamps, 1838)
             53 †Microtus henseli
 53 †Microtus henseli
             54 Microtus schelkovnikovi Satunin, 1907
 54 Microtus schelkovnikovi Satunin, 1907
             55 Microtus sikimensis (Hodgson, 1849)
 55 Microtus sikimensis (Hodgson, 1849)
             56 Microtus socialis Pallas, 1773 - social vole
 56 Microtus socialis Pallas, 1773 - social vole
             57 Microtus subterraneus (de Selys-Longchamps, 1836)
 57 Microtus subterraneus (de Selys-Longchamps, 1836)
             58 Microtus tatricus Kratochvíl, 1952
 58 Microtus tatricus Kratochvíl, 1952
             59 Microtus thomasi Barrett-Hamilton, 1903
 59 Microtus thomasi Barrett-Hamilton, 1903
             60 Microtus townsendii (Bachman, 1839) - Townsend's vole
 60 Microtus townsendii (Bachman, 1839) - Townsend's vole
             61 Microtus transcaspicus Satunin, 1905 - Transcaspian vole
 61 Microtus transcaspicus Satunin, 1905 - Transcaspian vole
             62 Microtus umbrosus Merriam, 1898 - Zempoaltepec vole
 62 Microtus umbrosus Merriam, 1898 - Zempoaltepec vole
             63 Microtus xanthognathus (Leach, 1815) - yellow-cheeked vole
 63 Microtus xanthognathus (Leach, 1815) - yellow-cheeked vole
             64 Subgenus Agricola Blasius, 1857
 64 Subgenus Agricola Blasius, 1857
             65 Subgenus Microtus Schrank, 1798
 65 Subgenus Microtus Schrank, 1798
             66 Subgenus Terricola Fatio, 1867
 66 Subgenus Terricola Fatio, 1867
             67 Subgenus Mynomes
 67 Subgenus Mynomes
             68 Subgenus Aulacomys Rhoads, 1894
 68 Subgenus Aulacomys Rhoads, 1894
             69 Subgenus Alexandromys
 69 Subgenus Alexandromys
             70 Subgenus Stenocranius
 70 Subgenus Stenocranius
             72 Subgenus Neodon Hodgson, 1849
 72 Subgenus Neodon Hodgson, 1849
             74 Subgenus Pallasiinus Kretzoi, 1964
 74 Subgenus Pallasiinus Kretzoi, 1964
             76 Subgenus Pitymys McMurtrie, 1831
 76 Subgenus Pitymys McMurtrie, 1831
             77 Subgenus Orthriomys Merriam, 1898
 77 Subgenus Orthriomys Merriam, 1898