[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838 Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875 Family Tholoniidae Haeckel, 1887 Genus Amphitholus Haeckel, 1887 1 Amphitholus acanthometra Haeckel, 1887