Phylum Protozoa (Goldfuss, 1818) C.T. von Siebold, 1854 see Kingdom Protozoa Goldfuss, 1818 Class Mastigophora Diesing, 1866 see Subphylum Mastigophora Diesing, 1866 1 Order Flagellata see Class Flagellata 2 Order Choanoflagellata see Phylum Choanoflagellata Kent, 1880 3 Order Cystoflagellata Haeckel, 1874 4 Order Cilioflagellata Müller see Subphylum Dinoflagellata Bütschli, 1885