living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Tardigrada Doyère, 1840 - tardigrades
           Order Heterotardigrada Marcus, 1927 see Class Heterotardigrada Marcus, 1927
             Suborder Echiniscoidea Richters, 1926 see Order Echiniscoidea Richters, 1926
               Family Oreellidae Ramazzotti, 1962
                 1 Genus Oreella Murray, 1910
                 2 Genus Echiniscoides Plate, 1889
                 3 Genus Archechiniscus Schulz, 1953