[Bilateria] Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
   ecdysozoans see Clade Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997, nom. cl. inval.
     Cycloneuralia Nielsen, 1995 see [unranked] Introverta Nielsen, 1995
       Nematomorpha Vejdovsky, 1886 - horsehair worms