Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Mammalia Linnaeus, 1758 - mammals
               Subclass Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
                 Order Rodentia Bowdich, 1821 - rodents
                   Suborder Sciuromorpha Brandt, 1855
                     Superfamily Sciuroidea Batsch, 1788
                       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 Callosciurini (Pocock, 1923) Simpson, 1945 see Tribe Nannosciurini Forsyth Major, 1893
                           6 Tribe Funambulini Pocock, 1923
                           7 Tribe Ratufini Moore, 1959
                           8 Tribe Protoxerini Moore, 1959