Phylum Ciliophora Doflein, 1901 - ciliates Subphylum Intramacronucleata Lynn, 1996 - amphiesmates Class Oligohymenophorea de Puytorac et al., 1974 - oligohymenophoreans Subclass Hymenostomatia (Delage & Hérouard, 1896) Cavalier-Smith, 1993 - hymenostome ciliates 1 Order Tetrahymenida Fauré-Fremiet, 1956 2 Order Ophryoglenida Canella, 1964