Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Spumellaria Ehrenberg, 1875
       Order Cancelliata Afanasieva & Amon, 2003
         Family †Haplentactiniidae Nazarov, 1980
           Subfamily †Pseudorotasphaerinae Noble, 1994
             1 Genus †Cancellosphaera Afanasieva, 2000
             2 Genus †Diparvapila MacDonald, 1998
             3 Genus †Intracorpus Won, 1997
             4 Genus †Parvalanapila MacDonald, 1998
             5 Genus †Pseudorotasphaera Noble, 1994
             6 Genus †Russirad Afanasieva, 2000
             7 Genus †Stylactinosphaera Noble, 1994
             8 Genus †Syntagentactinia Nazarov, 1980