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 Pyloniata Haeckel, 1881
         Superfamily Larnacillioidea Haeckel, 1887
           Family Larnacillidae Haeckel, 1887
             Subfamily †Histriastrinae Dumitrica, 1989
               1 Genus †Amphimenium Haeckel, 1881
               2 Genus †Histiastrum Ehrenberg, 1847
               3 Genus †Stauralastrum Haeckel, 1887
               4 Genus †Stephanastrum Ehrenberg, 1847