Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     1 Class †Aculearia Afanasieva, 1999
     2 Class Spumellaria Ehrenberg, 1875
     3 Class Sphaerellaria Haeckel, 1881
     4 Class Stauraxonaria Afanasieva & Amon, 2005
     5 Class Nassellaria Ehrenberg, 1847
     6 Class Collodaria Haeckel, 1881