[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
           Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
             Infraclass Actinopteri Cope, 1871 see Class Actinopteri Cope, 1871
               Superdivision Neopterygii Regan, 1923 see Subclass Neopterygii Regan, 1923
                 Division Halecomorphi Cope, 1872
                   1 Order †Parasemionotiformes Lehman, 1966 [monotypic]
                   2 Order †Panxianichthyiformes Sun, Tintori, Xu, Lombardo, Ni & Jiang, 2016 [monotypic] see Order Ionoscopiformes Grande & Bemis, 1998
                   3 Order †Ophiopsiformes Ebert, 2018 [monotypic] see Order Ionoscopiformes Grande & Bemis, 1998
                   4 Order Amiiformes Huxley, 1861 - bowfins