Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Spumellaria Ehrenberg, 1875
       Order †Spongiata Afanasieva & Amon, 2003
         Family †Spongopolyentactiniidae Nazarov, 1975
           Subfamily †Spongopolyentactiniinae Nazarov, 1975
             1 Genus †Duodecimentactinia Won, 1997
             2 Genus †Multientactinia Won, 1997
             3 Genus †Parechidnina Kozur, Mostler & Repetski, 1996
             4 Genus †Spongentactinella Nazarov, 1975
             5 Genus †Spongomassa Won, 1999