Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987
   Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838
     Class Collodaria Haeckel, 1881
       Family Thalassosphaeridae Haeckel, 1862 see Family Sphaerozoidae Haeckel, 1862
         1 Genus Thalassoraphis Campbell, 1954, nom. null. see Genus Thalassorhaphis Campbell, 1951
         2 Genus Thalassosphaera Haeckel, 1862
         3 Genus Thalassoxanthium Haeckel, 1881