Kingdom Animalia Linnaeus, 1758 - animals
Phylum Arthropoda Siebold, 1848 - arthropods
Subphylum Chelicerata Heymons, 1901
Class Pycnogonida Latreille, 1810 - pycnogonids
Order Pantopoda Gerstaecker, 1863
Suborder Eupantopodida Fry, 1978
1 Superfamily Colossendeidoidea Hoek, 1881 [monotypic]
2 Superfamily Ascorhynchoidea Hoek, 1881
3 Superfamily Nymphonoidea Wilson, 1878
4 Superfamily Phoxichilidoidea Sars, 1891
5 Superfamily Pycnogonoidea Wilson, 1878 [monotypic]
6 Superfamily Rhynchothoracoidea Thompson, 1909 [monotypic]