Phylum [Vertebrata] (Lamarck, 1801)
   Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
     Subclass Sarcopterygii Romer, 1955 see Clade Sarcopterygii Romer, 1955
       Superorder Crossopterygii (Huxley, 1861)
         1 Order †Onychodontida Andrews, 1973 see [unranked] Onychodontida Andrews, 1973
         2 Order †Porolepiformes Jarvik, 1942
         3 Order †Osteolepiformes Berg, 1937 see Order Osteolepidiformes Berg, 1937
         4 Order Actinistia Cope, 1872 - coelacanths see [unranked] Coelacanthimorpha