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
             Superclass Pisces Linnaeus, 1758 - fishes
               Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
                 Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
                   Superorder Holostei Müller, 1846 see Infraclass Holostei Müller, 1846
                     Order Lepisosteiformes Hay, 1929 - gars
                       Family Lepisosteidae Cuvier, 1825 - gars
                         Genus Lepisosteus Lacépède, 1803
                           Lepisosteus osseus (C. Linnaeus, 1758) - longnose gar