Bilateria Hatschek, 1888 - bilaterians
see Subkingdom Bilateria Hatschek, 1888
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]
Introverta Nielsen, 1995
Nematoida Rudolphi, 1808
Phylum Nematoda Gegenbaur, 1859 - round worms