Phylum Tardigrada Doyère, 1840 - tardigrades
   Class Eutardigrada Richters, 1926 - naked tardigrades
     Order Parachela Schuster, Nelson, Grigarick & Christenberry, 1980
       Family Macrobiotidae Thulin, 1928
         01 Genus Adorybiotus Maucci & Ramazzotti, 1981
         02 Genus Calcarobiotus Dastych, 1993
         03 Genus Dactylobiotus Schuster, in Schuster et al., 1980
         04 Genus Macrobiotus Schultze, 1834
         05 Genus Macroversum Pilato & Catanzaro, 1988
         06 Genus Minibiotus Schuster, in Schuster et al., 1980
         07 Genus Murrayon Bertolani & Pilato, 1989
         08 Genus Pseudodiphascon Ramazzotti, 1965
         09 Genus Pseudohexapodibius R. Bertolani & V.I. Biserov, 1996
         10 Genus Richtersius Pilato & Binda, 1987
         11 Genus Xerobiotus R. Bertolani & V.I. Biserov, 1996