Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Sphaerellaria Haeckel, 1881
       Order Actinommata Haeckel, 1862
         Family Actinommidae Haeckel, 1862
           01 Genus Actinomma Haeckel, 1860
           02 Genus Bolena Hull, 1997
           03 Genus Carposphaera Haeckel, 1881
           04 Genus Cromyomma Haeckel, 1862
           05 Genus Cromyosphaera Haeckel, 1881
           06 Genus †Mallanites O'Dogherty, 1994
           07 Genus Prunopyle Dreyer, 1888
           08 Genus †Pseudacanthosphaera De Wever, Dumitrica, Caulet, Nigrini & Caridroit, 2001, nom. null. see Genus Pseudoacanthosphaera O'Dogherty, 1994
           08.0 [Genus †Pseudoacanthosphaera O'Dogherty, 1994]
           09 Genus †Sphaeropyle Dreyer, 1888
           10 Genus †Staurosphaeretta Squinabol, 1904
           11 Genus Stuermeria Deflandre, 1964
           12 Genus †Tetracanthellipsis Squinabol, 1903
           13 Genus Thecosphaera Haeckel, 1881
           14 [Genus Acanthosphaera Ehrenberg, 1858]
           15 [Genus Actinosphaera Hollande & Enjumet, 1960]
           16 [Genus †Amphisphaera Haeckel, 1881]
           17 [Genus Amphistylus Haeckel, 1881]
           18 [Genus Cenosphaera Ehrenberg, 1854]
           19 [Genus Centracontium Popofsky, 1912]
           20 [Genus †Conoactinomma Gorbunov, 1979]
           21 [Genus Cromyatractus Haeckel, 1887]
           22 [Genus †Cromydruppocarpus Campbell & Clark, 1944]
           23 [Genus Cromyechinus Haeckel, 1881]
           24 [Genus †Diploplegma Hinde, 1890]
           25 [Genus Drymyomma Jørgensen, 1900]
           26 [Genus Elatomma Haeckel, 1887]
           27 [Genus †Heterosestrum Clark & Campbell, 1945]
           28 [Genus Hexacromyum Haeckel, 1881]
           29 [Genus Liosphaera Haeckel, 1887]
           30 [Genus Lithatractus Haeckel, 1887]
           31 [Genus Spongodictyon Haeckel, 1862]
           32 [Genus Spongodrymus Haeckel, 1881]
           33 [Genus Spongoplegma Haeckel, 1881]
           34 [Genus Spongosphaera Ehrenberg, 1847]
           35 [Genus Staurolonche Haeckel, 1881]
           36 [Genus Stauroxiphos Haeckel, 1887]
           37 [Genus Thecosphaerella Haeckel, 1887]
           38 [Genus Trilobatum Popofsky, 1912]
           39 [Genus Xiphosphaera Haeckel, 1881]