Metazoa see Kingdom Animalia Linnaeus, 1758
   Gastraeozoa
     Trochaeozoa see [unranked] Bilateria Hatschek, 1888
       Protornaeozoa
         Notoneuralia Ulrich, 1951
           Cyrtotreta
             Chordata Bateson, 1885 - chordates see Phylum Chordata Bateson, 1885
               Phylum Cephalochordata Owen, 1846 see Subphylum Cephalochordata Owen, 1846