[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
Count: [*†*] 2o;18f;204g;393s;12ss; †2f;149g;793s;71ss;1v [25 Oct 2018]
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
  Count: [*†*] 8f;87g;151s;3ss; †1f;48g;211s;17ss [25 Oct 2018]
     1 Family Actinommidae Haeckel, 1862
    Count: [*†*] 51g;102s;1ss; †21g;100s;5ss [25 Oct 2018]
     2 Family Coccodiscidae Haeckel, 1862
    Count: [*†*] 4g;4s; †7g;27s;2ss [25 Oct 2018]
     3 Family Heliodiscidae Haeckel, 1881
    Count: [*†*] 1g;2s; †1g;4s [25 Oct 2018]
     4 Family Litheliidae Haeckel, 1862
    Count: [*†*] 4g;5s; †1g;14s;5ss [25 Oct 2018]
     5 Family †Orosphaeridae Haeckel, 1887
    Count: [*†*] †1g;1s [25 Oct 2018]
     6 Family Pyloniidae Haeckel, 1881
    Count: [*†*] 10g;12s; †2g;5s [25 Oct 2018]
     7 Family Sphaerozoidae Haeckel, 1862
    Count: [*] 1g;1s [25 Oct 2018]
     8 Family Spongodiscidae Haeckel, 1862
    Count: [*†*] 13g;22s;2ss; †15g;60s;5ss [25 Oct 2018]
     9 Family Tholoniidae Haeckel, 1887
    Count: [*] 3g;3s [25 Oct 2018]