Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Chelicerata Heymons, 1901
       Class Pycnogonida Latreille, 1810 - pycnogonids
         Order Pantopoda Gerstäcker, 1863
           Suborder Eupantopodida Fry, 1978
             Superfamily Ascorhynchoidea Hoek, 1881
               1 Family Ascorhynchidae Hoek, 1881
               2 Family Ammotheidae Dohrn, 1881