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 Chondrostei Müller, 1844 see Subclass Chondrostei Müller, 1844 Order †Ptycholepiformes Andrews et al., 1967 [monotypic] 1 Family †Ptycholepidae see Family Ptycholepididae Brough, 1939