life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Empire Eukaryota (Chatton, 1925) see Domain Eukaryota Chatton, 1925
     Superkingdom Metakaryota see Domain Eukaryota Chatton, 1925
       Kingdom Protozoa Goldfuss, 1818 - protozoa
         Subkingdom Dictyozoa Cavalier-Smith, 1991
           Branch Bikonta Cavalier-Smith, 1993
             Infrakingdom Neozoa Cavalier-Smith, 1993
               Parvkingdom Actinopoda Calkins, 1902
                 Phylum Radiozoa Cavalier-Smith, 1987 see Subphylum Radiozoa Cavalier-Smith, 1987
                   Subphylum Spasmaria Cavalier-Smith, 1993 see Superclass Spasmaria Cavalier-Smith, 1993
                     Class Acantharea Haeckel, 1881
                       Subclass Holacanthia Cavalier-Smith, 1993
                         1 Order Holacanthida Schewiakoff, 1926
                         2 Order Plegmacantha Rechetniak, 1981