[Phylum] Chordata Bateson, 1885 - chordates Subphylum Craniata auct. Infraphylum Vertebrata Lamarck, 1801 - vertebrates Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates Class †Placodermi McCoy, 1848 Order †Macropetalichthyiformes Family †Macropetalichthyidae Eastman, 1898 Genus †Macropetalichthys Norwood & Owen, 1846