[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Tardigrada Doyère, 1840 - tardigrades
     Order Heterotardigrada Marcus, 1927 see Class Heterotardigrada Marcus, 1927
       Family Halechiniscidae Thulin, 1928
         Genus Styraconyx Thulin, 1942
           0 Styraconyx hallasi Kristensen, 1977
           01 Styraconyx craticulus (Pollock, 1983)
           02 Styraconyx haploceros Thulin, 1942
           03 Styraconyx kristenseni Renaud-Mornant, 1981
           04 Styraconyx nanoqsunguak Kristensen & Higgins, 1984
           05 Styraconyx paulae Robotti, 1971
           06 Styraconyx qivitoq Kristensen & Higgins, 1984
           07 Styraconyx sardiniae d'Addabbo Gallo et al., 1989
           08 Styraconyx sargassii Thulin, 1942 see Styraconyx sargassi Thulin, 1942
           09 Styraconyx testudo d'Addabbo Gallo et al., 1984
           10 Styraconyx tyrrhenus d'Addabbo Gallo et al., 1989