[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Osteostracomorphi
         Class †Osteostraci Lankester, 1868
           Order †Benneviaspidiformes Afanassieva, 1991
             1 Family †Mimetaspididae Stensiö, 1958
             2 Family †Pattenaspididae Stensiö, 1958
             3 Family †Benneviaspididae Denison, 1951, nom. praeval.
             4 Family †Boreaspididae Berg, 1955, nom. praeval.