Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Class Osteichthyes Huxley, 1880 [paraphyletic] - bony fishes see [unranked] Euteleostomi
         Subclass Sarcopterygii Romer, 1955 see Clade Sarcopterygii Romer, 1955
           Order Crossopterygii Huxley, 1861 - lobe-finned fishes see Infraclass Crossopterygii Huxley, 1861
             Suborder †Onychodontiformes [monotypic] see Order Onychodontida Andrews, 1973
               1 Family †Onychodontidae Woodward, 1891