Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct. see Subphylum Vertebrata Cuvier, 1812
       [[plesion] Genus †Haikouichthys Luo, Hu & Shu, 1999] see Genus Myllokunmingia Shu et al., 1999
         1 [†Haikouichthys ercaicunensis Luo et al., 1999] see Myllokunmingia fengjiaoa Wagner, 2020