living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryotae see Domain Eukaryota Chatton, 1925
     Animalia Linnaeus, 1758 - animals
       Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Chordata Bateson, 1885 - chordates
           Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
             Mammalia Linnaeus, 1758 - mammals
               Theria Parker & Haswell, 1897
                 Eutheria Gill, 1872
                   Rodentia Bowdich, 1821 - rodents
                     Myomorpha Brandt, 1855 see Infraorder Myomorphi
                       Muroidea Batsch, 1788
                         Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
                           Murinae Batsch, 1788 - Old World mice and rats
                             Rattus Fischer de Waldheim, 1803 - rats
                               Rattus norvegicus (Berkenhout, 1769) - brown rat