[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Anaspidomorphi
         Class †Anaspida Traquair
           Order †Anaspidiformes
             Family †Septentrioniidae Blom, Märss & Miller, 2002
               Genus †Septentrionia Blom, Märss & Miller, 2002