[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Supergroup Opisthokonta Cavalier-Smith, 1987 - opisthokonts see Clade Opisthokonta Cavalier-Smith 1987, nom. cl. inval.
       Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
         Mesozoa van Beneden, 1876 [paraphyletic]
           Orthonectida Giard, 1880 see Phylum Orthonectida Giard, 1880
             Genus Rhopalura Giard, 1877