Kingdom Protozoa Goldfuss, 1818 - protozoa
   Subkingdom Gymnomyxa (Lankester, 1878) Cavalier-Smith, 2002 see Kingdom Protozoa Goldfuss, 1818
     Infrakingdom Rhizaria Cavalier-Smith, 2002
       Phylum Cercozoa Cavalier-Smith, 1998
         Subphylum Reticulofilosa Cavalier-Smith, 1997
           1 Genus Spongomonas Stein, 1878
           2 Genus Chlorarachnion Geitler, 1930
           3 Genus Gymnophrys Cienkowski, 1876
           4 Class Spongomonadea T. Cavalier-Smith, 2000 see Class Imbricatea T. Cavalier-Smith & E.E.-Y. Chao, 2003
           5 Genus Penardia Cash, 1904