Phylum Protozoa (Goldfuss, 1818) C.T. von Siebold, 1854 see Kingdom Protozoa Goldfuss, 1818 Class Infusoria see Phylum Ciliophora Doflein, 1901 1 Subclass Ciliata see [unranked] ciliates 2 Subclass Suctoria Claparède & Lachmann, 1858 - suctorians