Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987 Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838 Class Stauraxonaria Afanasieva & Amon, 2005 Order †Pyramidata Afanasieva & Amon, 2005 Family †Ruzhencevispongidae Kozur, 1980 Subfamily †Ruzhencevisponginae Kozur, 1980 Genus †Ruzhencevispongus Kozur, 1980