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 Brachiopoda Duméril, 1806 - brachiopods
           Class Articulata Huxley, 1869
             Order Rhynchonellida Kuhn, 1949
               Superfamily Rhynchonellacea Gray, 1848, nom. illeg. see Superfamily Rhynchonelloidea d'Orbigny, 1847
                 Family Frieleiidae Cooper, 1959
                   Genus Compsothyris Jackson, 1918
                     1 Compsothyris ballenyi Foster, 1974
                     2 Compsothyris racovitzae (Joubin, 1918)