Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Echimyidae Gray, 1825 - spiny rats
       01 Genus Proechimys Allen, 1899 - spiny rats
       02 Genus Hoplomys Allen, 1908 - armored rat
       03 Genus Euryzygomatomys Goeldi, 1901 - guiara
       04 Genus Clyomys Thomas, 1916
       05 Genus Carterodon Waterhouse, 1848
       06 Genus Thrichomys Trouessart, 1881 - punaré
       07 Genus Mesomys Wagner, 1845
       08 Genus Lonchothrix Thomas, 1920
       09 Genus Isothrix Wagner, 1845 - toros
       10 Genus Diplomys Thomas, 1916
       11 Genus Echimys Cuvier, 1809 - arboreal spiny rats
       12 Genus Dactylomys Geoffroy Saint-Hilaire, 1838 - coro-coros
       13 Genus Kannabateomys Jentink, 1891 - rato de Taquara
       14 Genus Olallamys Emmons, 1988