[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Anaspidomorphi
         Class †Anaspida Traquair
           Order †Anaspidiformes
             1 Family †Birkeniidae Traquair, 1900
             2 Family †Pterygolepididae Obruchev, 1964, "nom. praeval."
             3 Family †Rhyncholepididae Kiaer, 1924, nom. praeval.
             4 Family †Pharyngolepididae Kiaer, 1924, nom. praeval.
             5 Family †Tahulalepididae Blom, Märss & Miller, 2002
             6 Family †Septentrioniidae Blom, Märss & Miller, 2002
             7 Family †Ramsaasalepididae Blom, Märss & Miller, 2003