[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   [Class] Pycnogonida Latreille, 1810 - pycnogonids
     Order Pantopoda Gerstaecker, 1863
       Suborder Eupantopodida Fry, 1978
         1 Superfamily Rhynchothoracoidea Thompson, 1909 [monotypic]
         2 Superfamily Pycnogonoidea Wilson, 1878 [monotypic]
         3 Superfamily Colossendeidoidea Hoek, 1881 [monotypic]
         4 Superfamily Phoxichilidoidea Sars, 1891
         5 Superfamily Aschorhynchoidea Dunlop, Penney & Jekel, 2023, orth. inval. see Superfamily Ascorhynchoidea Hoek, 1881
         6 Superfamily Nymphonoidea Wilson, 1878