Kingdom Animalia Linnaeus, 1758 - animals Phylum Tardigrada Doyère, 1840 - tardigrades Class Heterotardigrada Marcus, 1927 - armored tardigrades Order Arthrotardigrada Marcus, 1927 - arthrotardigrades Family Neostygarctidae Grimaldi de Zio, D'Addabbo Gallo & Morone De Lucia, 1987