Phylum [Vertebrata] (Lamarck, 1801)
   Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
     Subclass Sarcopterygii Romer, 1955 see Clade Sarcopterygii Romer, 1955
       Superorder Choanata Säve-Söderbergh, 1934
         Order Dipnoi Müller, 1844 - lungfishes
           Genus †Dipnorhynchus Jaekel, 1927
           Genus †Dipterus Sedgwick & Murchison, 1829
           Genus †Griphognathus Gross, 1956