Phylum Tardigrada Doyère, 1840 - tardigrades
   Class Eutardigrada Richters, 1926 - naked tardigrades
     Order Parachela Schuster, Nelson, Grigarick & Christenberry, 1980
       Family Hypsibiidae Pilato, 1969
         Genus Hypsibius Ehrenberg, 1848
           1 Hypsibius convergens Urbanowicz, 1925
           2 Hypsibius dujardini (Doyère, 1840)
           3 Hypsibius microps Thulin, 1928
           4 Hypsibius novemcinctus Marcus
           5 Hypsibius pallidus Thulin, 1911
           6 Hypsibius scabropygus Cuénot, 1929