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 Superclass †Pteraspidomorphi Goodrich, 1909 [monotypic] Class †Pteraspidomorphi Goodrich, 1909 see Class Pteraspidomorpha Subclass †Arandaspida [monotypic] 1 Order †Arandaspidiformes Ritchie & Gilbert-Tomlinson, 1977