Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Class †Placodermi McCoy, 1848
       Order †Arthrodira Woodward, 1891 see [unranked] Arthrodira Woodward, 1891
         Suborder †Actinolepina Miles, 1973 see Suborder Actinolepidoidei Miles, 1973
           1 Family †Actinolepidae Gross, 1940 see Family Actinolepididae Gross, 1940, nom. praeval.
           2 Family †Goodradigbeeonidae