living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Mammalia Linnaeus, 1758 - mammals
               Subclass Theria Parker & Haswell, 1897
                 Infraclass Eutheria Gill, 1872
                   Order Edentata Vicq-d'Azyr, 1792 see Order Xenarthra Cope, 1889
                     Suborder Xenarthra Cope, 1889 - xenarthrans see Magnorder Xenarthra Cope, 1889
                       Family Bradypodidae Batsch, 1788 - three-toed tree sloths
                         Genus Choloepus Illiger, 1811 - two-toed tree sloths