Phylum Actinopoda Calkins, 1902
   Class Polycystina Ehrenberg, 1838 see Class Polycystinea Ehrenberg, 1838
     Order Spumellarida see Order Spumellaria Ehrenberg, 1875
       Suborder Sphaerellarina
         01 Family Centrocubidae Hollande & Enjumet, 1960
         02 Family Cyrtidosphaeridae
         03 Family Excentrochidae see Family Excentrochonchidae
         04 Family Hollandosphaeridae
         05 Family Macrosphaeridae
         06 Family Rhizosphaeridae Haeckel, 1881
         07 Family Spongosphaeridae
         08 Family Stigmosphaeridae
         09 Family Thecosphaeridae see Family Actinommidae Haeckel, 1862
         10 Family Arctiscidae
         11 Family Cyphinidae
         12 Family Druppulidae
         13 Family Ellipsidae
         14 Family Panartidae
         15 Family Sponguridae Haeckel, 1862
         16 Family Zygartidae
         17 Family Cenodicidae
         18 Family Coccodiscidae Haeckel, 1862
         19 Family Phacodiscidae Haeckel, 1881 see Subfamily Coccodiscinae Haeckel, 1862
         20 Family Porodiscidae see Family Spongodiscidae Haeckel, 1862
         21 Family Pylodiscidae
         22 Family Spongodiscidae Haeckel, 1862
         23 Family Larcaridae
         24 Family Larnacidae
         25 Family Lithellidae see Family Litheliidae Haeckel, 1862
         26 Family Phorticidae
         27 Family Pylonidae see Family Pyloniidae Haeckel, 1881
         28 Family Soreumidae
         29 Family Streblonidae
         30 Family Tholonidae see Family Tholoniidae Haeckel, 1887
         31 Family Zonaridae