Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Ctenomyidae Lesson, 1842 - tuco-tucos
       Genus Ctenomys Blainville, 1826 - tuco-tucos
         01 Ctenomys argentinus Contreras & Berry, 1982
         02 Ctenomys australis Rusconi, 1934
         03 Ctenomys azarae Thomas, 1903
         04 Ctenomys boliviensis Waterhouse, 1848
         05 Ctenomys bonettoi Contreras & Berry, 1982
         06 Ctenomys brasiliensis Blainville, 1826
         07 Ctenomys colburni J.A. Allen, 1903
         08 Ctenomys conoveri Osgood, 1946
         09 Ctenomys dorsalis Thomas, 1900
         10 Ctenomys emilianus Thomas & St. Leger, 1926
         11 Ctenomys flamarioni Travi, 1981
         12 Ctenomys frater Thomas, 1902
         13 Ctenomys fulvus Philippi, 1860 - tawny tuco-tuco
         14 Ctenomys haigi Thomas, 1917
         15 Ctenomys knighti Thomas, 1919
         16 Ctenomys latro Thomas, 1918
         17 Ctenomys leucodon Waterhouse, 1848
         18 Ctenomys lewisi Thomas, 1926
         19 Ctenomys magellanicus Bennett, 1835[1836] - Magellanic tuco-tuco
         20 Ctenomys maulinus Philippi, 1872 - Maule tuco-tuco
         21 Ctenomys mendocinus Philippi, 1869
         22 Ctenomys minutus Nehring, 1887
         23 Ctenomys nattereri Wagner, 1848
         24 Ctenomys occultus Thomas, 1920
         25 Ctenomys opimus Wagner, 1848 - highland tuco-tuco
         26 Ctenomys perrensis Thomas, 1898
         27 Ctenomys peruanus Sanborn & Pearson, 1947
         28 Ctenomys pontifex Thomas, 1918
         29 Ctenomys porteousi Thomas, 1916
         30 Ctenomys saltarius Thomas, 1912
         31 Ctenomys sericeus J.A. Allen, 1903
         32 Ctenomys sociabilis Pearson & Christie, 1985
         33 Ctenomys steinbachi Thomas, 1907
         34 Ctenomys talarum Thomas, 1898
         35 Ctenomys torquatus Lichtenstein, 1830
         36 Ctenomys tuconax Thomas, 1925
         37 Ctenomys tucumanus Thomas, 1900
         38 Ctenomys validus Contreras, Roig & Suzarte, 1977