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 Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
               Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                 Order Gaviiformes Wetmore & Miller, 1926
                   Family Gaviidae Allen, 1897 - divers
                     Genus Gavia Forster, 1788
                       1 Gavia arctica (Linnaeus, 1758) - black-throated diver
                       2 Gavia immer (Brünnich, 1764) - common loon
                       3 Gavia adamsii (Gray, 1859) - white-billed diver
                       4 Gavia stellata (Pontoppidan, 1763) - red-throated diver