bilaterians Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
   1 Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   2.1 Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997, nom. cl. inval. - ecdysozoans see Clade Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997 [Lake, Halanych, Servin & Garey 2020]
   2.2 Spiralia Schleip, 1929 - spiralians see Superphylum Spiralia Schleip, 1929