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 Echiniscidae Thulin, 1928
                 Genus Echiniscus C.A.S. Schultze, 1840
                   01 Echiniscus molluscorum Fox and Garcia-Moll, 1962
                   02 Subgenus Echiniscus C.A.S. Schultze, 1840 see Genus Echiniscus C.A.S. Schultze, 1840
                   03 Subgenus Bryodelphax Thulin, 1928 see Genus Bryodelphax Thulin, 1928
                   04 Subgenus Hypechiniscus Thulin, 1928 see Genus Hypechiniscus Thulin, 1928
                   05 Subgenus Bryochoerus Marcus, 1936 see Genus Bryochoerus Marcus, 1936
                   06 Echiniscus wendti Richters, 1903
                   07 Echiniscus tympanista Murray
                   08 Echiniscus merokensis Richters, 1904
                   09 Echiniscus quadrispinosus Richters, 1902
                   10 Echiniscus oihonnae Richters, 1903
                   11 Echiniscus spinulosus (Doyère, 1840)
                   12 Echiniscus trisetosus Cuénot, 1932