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
                     Subphylum Proterozoa Cavalier-Smith, 1991
                       Class Heteromitea Cavalier-Smith, 1993
                         Subclass Sarcomonadia Cavalier-Smith, 1993 see Class Sarcomonadea Cavalier-Smith, 1993
                           Superorder Jakobidea Cavalier-Smith, 1993
                             Order Cercomonadida Poche, 1913 - cercomonads
                               Genus Massisteria Larsen & Patterson, 1990