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 Sarcopterygii Romer, 1955 see Clade Sarcopterygii Romer, 1955
                   Order Dipnoi Müller, 1844 - lungfishes
                     1 Family †Dipnorhynchidae Berg, 1940
                     2 Family †Dipteridae Owen, 1846
                     3 Family †Phaneropleuridae Huxley
                     4 Family †Ctenodontidae Traquair, 1890
                     5 Family †Conchopomidae
                     6 Family †Sagenodontidae Jaekel, 1911
                     7 Family Ceratodidae see Family Ceratodontidae Gill, 1872
                     8 Family Lepidosirenidae Stirton, 1953 - South American lungfishes