Phylum Tardigrada Doyère, 1840 - tardigrades Class Heterotardigrada Marcus, 1927 - armored tardigrades Order Echiniscoidea Richters, 1926 Family Echiniscidae Thulin, 1928 Genus Echiniscus C.A.S. Schultze, 1840 Echiniscus testudo (Doyère, 1840)