[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Osteostracomorphi
         Class †Osteostraci Lankester, 1868
           Order †Cephalaspidiformes Halstead Tarlo, 1967
             Suborder †Cephalaspidoidei Halstead Tarlo, 1967
               Family †Parameteoraspididae Afanassieva, 1991
                 1 Genus †Parameteoraspis Blieck, Goujet & Janvier, 1987
                 2 Genus †Escuminaspis Ørvig, 1957