Phylum Radiolaria Müller, 1858
see Subphylum Radiozoa Cavalier-Smith, 1987
Superclass Polycystina Ehrenberg, 1838
see Superclass Polycystinia Ehrenberg, 1838
Class Nassellaria Ehrenberg, 1847
Order Cyrtidinata Haeckel, 1862
Superfamily Amphipyndacioidea Riedel, 1967
Family †Parvicingulidae Pessagno, 1977
Subfamily †Parvicingulinae Pessagno, 1977
Genus †Eoxitus Kozur, 1985