[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 †Quasipetalichthyidae Liu, 1991 Genus †Quasipetalichthys Liu, 1973