Phylum Radiolaria Müller, 1858 see Subphylum Radiozoa Cavalier-Smith, 1987 Superclass Polycystina Ehrenberg, 1838 see Superclass Polycystinia Ehrenberg, 1838 Class Sphaerellaria Haeckel, 1881 Order †Anakrusata Nazarov, 1977 [monotypic] Family †Anakrusidae Nazarov, 1977 Genus †Anakrusa Nazarov, 1977