[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Anaspidomorphi
         Order †Jamoytiiformes
           1 Family †Jamoytiidae White, 1946
           2 Family †Achanarellidae Newman, 2002
           3 Family †Euphaneropidae Woodward, 1900