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 Insectivora Bowdich, 1821 - insectivores see Superorder Insectivora Bowdich, 1821
                     Suborder Menotyphla (Haeckel) see Order Macroscelidea Butler, 1956
                       Family Tupaiidae Gray, 1825 - tree shrews
                         1 Genus Anathana Lyon, 1913 - Indian tree shrew
                         2 Genus Dendrogale Gray, 1848 - small smooth-tailed tree shrews
                         3 Genus Ptilocercus Gray, 1848 - pen-tailed tree shrew, feather-tailed tree shrew
                         4 Genus Tupaia Raffles, 1821 - tree shrews
                         5 Genus Urogale Mearns, 1905 - Philippine tree shrew