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 Pyloniata Haeckel, 1881
Superfamily Dactyliosphaeroidea Squinabol, 1904
Family Pseudoaulophacidae Riedel, 1967
Subfamily †Pseudoaulophacinae Riedel, 1967
Genus †Becus Wu, 1986