Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct.
       Vertebrata Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
         Myopterygii Janvier, 1978 - myopterygians
           Superclass †Osteostracomorphi [monotypic]
             Class †Cephalaspidomorphi Kiaer & Stensiö, 1920 see Class Osteostraci Lankester, 1868
               Order †Galeaspidiformes see Order Eugaleaspidiformes Pan, 1983
                 1 Genus †Komoceraspis
                 2 Genus †Duyunolepis Pan & Wang, 1982
                 3 Genus †Eugaleaspis Liu, 1980
                 4 Genus †Hanyangaspis Pan & Liu, 1975
                 5 Genus †Huananaspis Liu, 1973
                 6 Genus †Macrothyraspis Pan, 1992
                 7 Genus †Pentathyraspis Pan, 1992
                 8 Genus †Polybranchiaspis Liu, 1965