[Phylum] Chordata Bateson, 1885 - chordates Subphylum Craniata auct. Infraphylum Vertebrata Lamarck, 1801 - vertebrates Superclass †Osteostracomorphi Class †Galeaspidomorphi Superorder †Polybranchiaspidida Zhu & Gai, 2007 Order †Zhaotongaspidiformes [monotypic] Family †Zhaotongaspididae Wang & Zhu, 1994 Genus †Zhaotongaspis Wang & Zhu, 1994