Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates
     Pisces
       Class Sarcopterygii Romer, 1955 - lobe-finned fishes and tetrapods see Clade Sarcopterygii Romer, 1955
         Order Dipnoi Müller, 1844 - lungfishes
           Family Ceratodontidae Gill, 1872 - Australian lungfishes
           Family †Conchopomidae
           Family †Ctenodontidae Traquair, 1890
           Family †Dipnorhynchidae Berg, 1940
           Family †Dipteridae Owen, 1846
           Family Lepidosirenidae Stirton, 1953 - South American lungfishes
           Family †Phaneropleuridae Huxley
           Family †Rhynchodipteridae Berg, 1940
           Family †Sagenodontidae Jaekel, 1911
           Family †Uranolophidae Miles, 1977
           Family †Uronemidae Traquair, 1890