[Bilateria] Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
   1 flatworms see Phylum Platyhelminthes Gegenbaur, 1859
   2.1 deuterostomes see Superphylum Deuterostomia Grobben, 1908
   2.2 bryozoans see [unranked] Bryozoa
   2.3 lophotrochozoans see Clade Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake 1995
   2.4 ecdysozoans see Clade Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997, nom. cl. inval.