Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987 Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838 Class Nassellaria Ehrenberg, 1847 Order †Pylomariata Afanasieva, 1999 Superfamily †Cessipyloroidea Afanasieva, 1999 Family †Aciferopyloridae Afanasieva, 1999 [monotypic] 1 Genus †Aciferopylorum Nazarov & Ormiston, 1990