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 †Radiiformata Afanasieva & Amon, 2005 Family †Latentifistulidaeᵀ Nazarov & Ormiston, 1983 Subfamily †Latentifistulinae Nazarov & Ormiston, 1983 Genus †Ishigaum De Wever & Caridroit, 1984