Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Sphaerellaria Haeckel, 1881
       Order Entactiniata Kozur & Mostler, 1982
         Family †Entactiniidae Riedel, 1967
           Subfamily †Bientactinosphaerinae Afanasieva, 1999
             01 Genus †Bientactinosphaera Afanasieva, 2000
             02 Genus †Hindeosphaera Kozur & Mostler, 1979
             03 Genus †Muelleritortis Kozur, 1988
             04 Genus †Mulderella Kozur & Mostler, 1981
             05 Genus †Ornatoentactinia Afanasieva, 2000
             06 Genus †Palaeoactinosphaera Noble, 1994
             07 Genus †Parasepsagon Dumitrica, Kozur & Mostler, 1980
             08 Genus †Pseudostylosphaera Kozur & Mostler, 1981
             09 Genus †Radiobisphaera Won, 1997
             10 Genus †Sepsagon Dumitrica, Kozur & Mostler, 1980
             11 Genus †Tritortis Kozur, 1988