Phylum Tardigrada Doyère, 1840 - tardigrades Class Eutardigrada Richters, 1926 - naked tardigrades Order Parachela Schuster, Nelson, Grigarick & Christenberry, 1980 Family Hypsibiidae Pilato, 1969 Genus Platicrista Pilato, 1987 1 Platicrista horribilis L. Kaczmarek & L. Michalczyk, 2003