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 Order †Pachycormiformes Berg, 1940 [monotypic] Family †Pachycormidae Woodward, 1895