[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         Class †Placodermi McCoy, 1848
           †Arthrodira Woodward, 1891
             Order †Actinolepidiformes
               Family †Kujdanowiaspididae Berg, 1955, nom. praeval.
                 1 Genus †Kujdanowiaspis Stensiö, 1942