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 †Proventocitoidea Aitchison, 1998 [monotypic] 1 Family †Proventocitidae Aitchison, 1998