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 Sylvilagus Gray, 1867
             Sylvilagus floridanus (Allen, 1890) - eastern cottontail
               01 [Sylvilagus floridanus floridanus]ᵀ (J.A. Allen, 1890)
               02 Sylvilagus floridanus alacer (Bangs, 1896)
               03 Sylvilagus floridanus chapmani (J. Allen, 1899)
               04 Sylvilagus floridanus holzneri (Mearns, 1896)
               05 Sylvilagus floridanus mallurus (Thomas, 1898)
               06 Sylvilagus floridanus aztecus (J. Allen, 1890)
               07 Sylvilagus floridanus connectens (Nelson, 1904)
               08 Sylvilagus floridanus hondurensis Goldman, 1932
               09 Sylvilagus floridanus macrocorpus Diersing & Wilson, 1980
               10 Sylvilagus floridanus orizabae (Merriam, 1893)
               11 Sylvilagus floridanus yucatanicus (Miller, 1899)
               12 Sylvilagus floridanus avius Osgood, 1910
               13 Sylvilagus floridanus cumanicus (Thomas, 1897)
               14 Sylvilagus floridanus margaritae Miller, 1898
               15 Sylvilagus floridanus nigronuchalis (Hartert, 1894)
               16 Sylvilagus floridanus orinoci Thomas, 1900
               17 Sylvilagus floridanus purgatus Thomas, 1920
               18 Sylvilagus floridanus superciliaris (J. Allen, 1899)