[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Osteostracomorphi
         Class †Galeaspidomorphi
           Superorder †Polybranchiaspidida Zhu & Gai, 2007
             1 Family †Geraspididae Pan & Chen, 1993, incertae sedis
             2 Order †Polybranchiaspidiformes Liu, 1965
             3 Order †Zhaotongaspidiformes [monotypic]
             4 Order †Huananaspidiformes Janvier, 1975
             5 Order †Pituriaspidiformes [monotypic]