Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
   Phylum Alveolata Cavalier-Smith, 1991 see Superphylum Alveolata Cavalier-Smith, 1991
     Subphylum Ciliophora Doflein, 1901 see Phylum Ciliophora Doflein, 1901
       Class Phyllopharyngea de Puytorac et al., 1974
         1 Subclass Phyllopharyngia de Puytorac et al., 1974 see Subclass Cyrtophoria Fauré-Fremiet, 1956
         2 Subclass Chonotrichia Wallengren, 1895
         3 Subclass Suctoria Claparède & Lachmann, 1858 - suctorians