[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     1 Order †Myllokunmingiiformes Shu, 2003 [monotypic]
     2 Infraphylum Myxinomorphi [monotypic]
     3 Infraphylum Vertebrata Lamarck, 1801 - vertebrates