living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818
         Phylum Ciliophora Doflein, 1901 - ciliates
           Class Oligohymenophora see Class Oligohymenophorea de Puytorac et al., 1974
             Subclass Hymenostomata see Subclass Hymenostomatia (Delage & Hérouard, 1896) Cavalier-Smith, 1993
               Order Hymenostomatidaᵀ Delage & Hérouard, 1896 see Subclass Hymenostomatia (Delage & Hérouard, 1896) Cavalier-Smith, 1993
                 Suborder Tetrahymenina Fauré-Fremiet, 1956 see Order Tetrahymenida Fauré-Fremiet, 1956
                   1 Family Tetrahymenidae Corliss, 1952
                   2 Family Glaucomidae Corliss, 1971
                   3 Family Turaniellidae Didier, 1971
                   4 Family Curimostomatidae Jankowski, 1968
                   5 Family Sagittariidae R. Grandori & L. Grandori, 1935