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 †Pituriaspidiformes