Protozoa Goldfuss, 1818 - protozoans Phylum Ciliophora Doflein, 1901 - ciliates Class Kinetofragminophorea - kinetofragminophoreans see Phylum Ciliophora Doflein, 1901 Subclass Hypostomatia - hypostome ciliates see Subphylum Intramacronucleata Lynn, 1996 Order Apostomatida Chatton & Lwoff, 1928