Phylum Tardigrada Doyère, 1840 - tardigrades Class Eutardigrada Richters, 1926 - naked tardigrades Order Parachela Schuster, Nelson, Grigarick & Christenberry, 1980 Family Hypsibiidae Pilato, 1969 Genus Isohypsibius Thulin, 1928 Isohypsibius macrodactylus (Maucci, 1978)