Phylum Ciliophora Doflein, 1901 - ciliates
   Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
     Class Nassophorea Small & Lynn, 1981
       1 Order Synhymeniida de Puytorac et al., 1974
       2 Order Nassulida Jankowski, 1967
       3 Order Microthoracida Jankowski, 1967
       4 ?Order Colpodidiida Foissner et al., 2002