Phylum Tardigrada Doyère, 1840 - tardigrades
Class Eutardigrada Richters, 1926 - naked tardigrades
Order Parachela Schuster, Nelson, Grigarick & Christenberry, 1980
1 Family Macrobiotidae Thulin, 1928
2 Family Calohypsibiidae Pilato, 1969
3 Family Eohypsibiidae Bertolani & Kristensen, 1987
4 Family Microhypsibiidae Pilato, 1998
5 Family Hypsibiidae Pilato, 1969
6 Family Necopinatidae Ramazzotti & Maucci, 1983
7 ?Genus Apodibius Dastych, 1983