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 Rodentia Bowdich, 1821 - rodents
                     Suborder Sciuromorpha Brandt, 1855
                       Family Sciuridae Batsch, 1788 - squirrels, chipmunks, marmots, and prairie dogs
                         Subfamily Sciurinae Batsch, 1788 - tree and ground squirrels
                           1 Tribe Marmotini Pocock, 1923
                           2 Tribe Xerini Murray, 1866
                           3 Tribe Tamiasciurini Pocock, 1923
                           4 Tribe Sciurini Batsch, 1788
                           5 Tribe Callosciurinae Pocock, 1923 see Tribe Callosciurini (Pocock, 1923) Simpson, 1945
                           6 Tribe Funambulini Pocock, 1923
                           7 Tribe Ratufini Moore, 1959
                           8 Tribe Protoxerini Moore, 1959