[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Osteostracomorphi
         Class †Galeaspidomorphi
           Superorder †Polybranchiaspidida Zhu & Gai, 2007
             Family †Geraspididae Pan & Chen, 1993, incertae sedis
               1 Genus †Geraspis Pan & Chen, 1993