Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Class Osteichthyes Huxley, 1880 [paraphyletic] - bony fishes see [unranked] Euteleostomi
         Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
           Infraclass Neopterygii Regan, 1923 see Subclass Neopterygii Regan, 1923
             Division Teleostei Müller, 1845 see Infraclass Teleostei Müller, 1845
               Order †Ichthyodectiformes Bardack & Sprinkle, 1969
                 1 Family †Allothrissopidae Patterson & Rosen, 1977
                 2 Family †Ichthyodectidae Crook, 1892
                 3 Family †Saurodontidae Cope, 1871
                 4 ?Family †Thryptodontidae
                 5 Family †Tselfatiidae Arambourg, 1954, incertae sedis