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]
Panarthropoda Nielsen, 1995 - panarthropods
Arthropoda Siebold, 1848 - arthropods
see Phylum Arthropoda Siebold, 1848
Chelicerata s.l. Heymons, 1901
see Superclass Chelicerata Heymons, 1901
Euchelicerata Weygoldt & Paulus, 1979
Xiphosura Latreille, 1802 - horseshoe crabs
see Class Xiphosura Latreille, 1802