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 †Parvivaccidae Pessagno & Yang, 1989 Subfamily †Leugeoninae Yang & Wang, 1990 Genus †Leugeo Yang & Wang, 1990