[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   [Class] Pycnogonida Latreille, 1810 - pycnogonids
     Order Pantopoda Gerstaecker, 1863
       1 Genus †Palaeothea Bergström, Stürmer & Winter, 1980
       2 Suborder Stiripasterida Fry, 1978 [monotypic]
       3 Suborder Eupantopodida Fry, 1978