Phylum Radiolaria Müller, 1858
see Subphylum Radiozoa Cavalier-Smith, 1987
Superclass Polycystina Ehrenberg, 1838
see Superclass Polycystinia Ehrenberg, 1838
Class Nassellaria Ehrenberg, 1847
Order Cyrtidinata Haeckel, 1862
Superfamily Acropyramidoidea Haeckel, 1881
Family Acropyramididae Haeckel, 1881
Genus Cladachnidium Afanasieva & Amon, 2005, nom. null.
see Genus Cladarachnium Haeckel, 1881