Phylum Ciliophora Doflein, 1901 - ciliates Subphylum Intramacronucleata Lynn, 1996 - amphiesmates Class Oligohymenophorea de Puytorac et al., 1974 - oligohymenophoreans Subclass Apostomatia Chatton & Lwoff, 1928 Order Apostomatida Chatton & Lwoff, 1928