Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Sphaerellaria Haeckel, 1881
       Order Sphaerellata Haeckel, 1887
         Family †Pantanelliidae Pessagno, 1977
           Subfamily †Pantanelliinae Pessagno, 1977
             1 Genus †Betraccium Pessagno, 1979
             2 Genus †Cantalum Pessagno, 1979
             3 Genus †Cecrops Pessagno, 1977, nom. illeg.
             4 Genus †Gorgansium Pessagno & Blome, 1980
             5 Genus †Pachyonchus Pessagno & Blome, 1986 see Genus Pachyoncus Pessagno & Blome, 1980
             6 Genus †Pantanellium Pessagno, 1977
             7 Genus †Pseudopantanellium Yeh, 1987
             8 Genus †Trillus Pessagno & Blome, 1980
             9 Genus †Zartus Pessagno & Blome, 1980