Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Sciurognathi (Tullberg, 1899) see Suborder Sciuromorpha Brandt, 1855
       Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
         Subfamily Sigmodontinae Wagner, 1843
           Genus Akodon Meyen, 1833 - South American field mice
             01 Akodon aerosus Thomas, 1913
             02 Akodon affinis J. A. Allen, 1912
             03 Akodon albiventer Thomas, 1897 - white-bellied akodont
             04 Akodon azarae Fischer, 1829
             05 Akodon bogotensis Thomas, 1895
             06 Akodon boliviensis Meyen, 1833
             07 Akodon budini Thomas, 1918
             08 Akodon cursor Winge, 1887
             09 Akodon dayi Osgood, 1916
             10 Akodon dolores Thomas, 1916
             11 Akodon fumeus Thomas, 1902
             12 Akodon hershkovitzi Patterson et al., 1984 see Abrothrix hershkovitzi (Patterson et al., 1984)
             13 Akodon illuteus (Thomas, 1925) see Abrothrix illuteus Thomas, 1925
             14 Akodon iniscatus Thomas, 1919
             15 Akodon juninensis Myers, Patton, & Smith, 1990
             16 Akodon kempi (Thomas, 1917)
             17 Akodon kofordi Myers & Patton, 1989
             18 Akodon lanosus (Thomas, 1897) see Abrothrix lanosus (Thomas, 1897)
             19 Akodon latebricola Anthony, 1924
             20 Akodon lindberghi Hershkovitz, 1990
             21 Akodon longipilis (Waterhouse, 1837) see Abrothrix longipilis (Waterhouse, 1837)
             22 Akodon mansoensis De Santis and Justo, 1980 see Abrothrix mansoensis
             23 Akodon markhami Pine, 1973 see Abrothrix markhami (Pine, 1973) Smith & Patton, 1999
             24 Akodon mimus Thomas, 1901
             25 Akodon molinae Contreras, 1968
             26 Akodon mollis Thomas, 1894
             27 Akodon neocenus Thomas, 1919
             28 Akodon nigrita (Lichtenstein, 1829)
             29 Akodon olivaceus (Waterhouse, 1837) see Abrothrix olivaceus (Waterhouse, 1837)
             30 Akodon orophilus Osgood, 1913
             31 Akodon puer Thomas, 1902
             32 Akodon sanborni Osgood, 1943 see Abrothrix sanborni (Osgood, 1943)
             33 Akodon sanctipaulensis Hershkovitz, 1990
             34 Akodon serrensis Thomas, 1902
             35 Akodon siberiae Myers & Patton, 1989
             36 Akodon simulator Thomas, 1916
             37 Akodon spegazzinii Thomas, 1897
             38 Akodon subfuscus Osgood, 1944
             39 Akodon surdus Thomas, 1917
             40 Akodon sylvanus Thomas, 1921
             41 Akodon toba Thomas, 1921
             42 Akodon torques Thomas, 1917
             43 Akodon urichi J. A. Allen and Chapman, 1897
             44 Akodon varius Thomas, 1902
             45 Akodon xanthorhinus (Waterhouse, 1837) see Abrothrix olivaceus (Waterhouse, 1837)
             47 Subgenus Akodon Meyen, 1833
             48 Subgenus Microxus
             49 Subgenus Hypsimys
             50 Subgenus Abrothrix Waterhouse, 1837 see Genus Abrothrix Waterhouse, 1837
             51 Subgenus Deltamys Thomas, 1917