Phylum Actinopoda Calkins, 1902 1 Class Polycystina Ehrenberg, 1838 see Class Polycystinea Ehrenberg, 1838 2 Class Phaeodaria Haeckel, 1879 see Subclass Phaeodaria Haeckel, 1879 3 Class Heliozoa 4 Class Acantharea Haeckel, 1881