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 Cetacea Brisson, 1762 - whales, dolphins, and porpoises see Infraorder Cetacea Brisson, 1762
                   Suborder Odontoceti Flower, 1867 - toothed whales see Parvorder Odontoceti Flower, 1867
                     Superfamily Monodontoidea Fraser & Purves, 1960 see Superfamily Delphinoidea Gray, 1821
                       Family Monodontidae Gray, 1821 - white whales
                         1.2 Genus Delphinapterus Lacépède, 1804 - beluga
                         2.1 Genus Monodon Linnaeus, 1758 - narwhal