Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987 Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838 Class Stauraxonaria Afanasieva & Amon, 2005 Order Lobatiradiata Afanasieva & Amon, 2005 Family †Hagiastridae Riedel, 1971 Genus †Higumastra Baumgartner, 1980