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 Ciliomyxa Cavalier-Smith, 1993
                 Superphylum Opalomyxa Cavalier-Smith, 1993
                   Phylum Opalozoa Cavalier-Smith, 1992 see Subphylum Opalozoa Cavalier-Smith, 1992
                     1 Subphylum Proterozoa Cavalier-Smith, 1991
                     2 Subphylum Opalinata Wenyon, 1926 [monotypic] see Superclass Opalinata Wenyon, 1926
                     3 Subphylum Kinetomonada Cavalier-Smith, 1993 [monotypic]
                     4 Subphylum Hemimastigophora Foissner, Blatterer & Foissner, 1988 [monotypic] see Phylum Hemimastigophora Foissner, Blatterer & Foissner, 1988