Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899
       Family Caviidae Fischer de Waldheim, 1817 - cavies and Patagonian "hares"
         Subfamily Caviinae Fischer de Waldheim, 1817
           1 Genus Cavia Pallas, 1766 - cavies
           2 Genus Galea Meyen, 1833, nom. illeg. - yellow-toothed cavies
           3 Genus Kerodon Cuvier, 1825 - rock cavy
           4 Genus Microcavia Gervais & Ameghino, 1880 - mountain cavies