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 Neosarcodina Cavalier-Smith, 1993
                 Phylum Rhizopoda Dujardin, 1835 - rhizopods see Phylum Cercozoa Cavalier-Smith, 1998
                   Class Filosea Leidy, 1879 - filose amebas
                     Subclass Cristidiscoidia Page, 1987 see Class Cristidiscoidea Page, 1987
                       Order Fonticulida Cavalier-Smith, 1993 [monotypic]
                         Family Fonticulidae Worley, Raper & Hohl, 1979