Phylum Tardigrada Doyère, 1840 - tardigrades Class Eutardigrada Richters, 1926 - naked tardigrades Order Parachela Schuster, Nelson, Grigarick & Christenberry, 1980 Family Macrobiotidae Thulin, 1928 Genus Murrayon Bertolani & Pilato, 1989 Murrayon hibernicus (Murray, 1911)