Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Lagomorpha Brandt, 1855 - lagomorphs
       Family Leporidae Batsch, 1788 - hares and rabbits
         Genus Sylvilagus Gray, 1867 - cottontails
           Subgenus Tapeti Gray, 1867
             1 Sylvilagus aquaticus (Bachman, 1837) - swamp rabbit
             2 Sylvilagus brasiliensis (Linnaeus, 1758) - forest rabbit
             3 ?Sylvilagus dicei Harris, 1932
             4 ?Sylvilagus insonus Nelson, 1904 - Omilteme cottontail
             5 Sylvilagus palustris (Bachman, 1837) - marsh rabbit
             6 Sylvilagus varynaensis Durant & Guevara, 2001