Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
     Pisces
       Class Sarcopterygii Romer, 1955 - lobe-finned fishes and tetrapods see [unranked] Sarcopterygii Romer, 1955
         Order Dipnoi Müller, 1844 - lungfishes see Superorder Dipnoi Müller, 1844
           Family Ceratodontidae Günther, 1871 - Australian lungfishes
           Family †Conchopomidae Berg, 1940 see Family Conchopomatidae Berg, 1940
           Family †Ctenodontidae Traquair, 1890
           Family †Dipnorhynchidae Berg, 1940
           Family †Dipteridae Agassiz, 1844
           Family Lepidosirenidae Bonaparte, 1841 - South American lungfishes
           Family †Phaneropleuridae Huxley, 1861
           Family †Rhynchodipteridae Moy-Thomas, 1939
           Family †Sagenodontidae Jaekel, 1911
           Family †Uranolophidae Miles, 1977
           Family †Uronemidae Traquair, 1891