Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987 Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838 Class Sphaerellaria Haeckel, 1881 Order Entactiniata Kozur & Mostler, 1982 Family †Entactiniidae Riedel, 1967 Subfamily †Thecentactiniinae Afanasieva, 1999 Genus †Thecentactinia Nazarov, 1975