[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Protista (Haeckel, 1866) - protists
     Phylum Protozoa (Goldfuss, 1818) C.T. von Siebold, 1854 see Kingdom Protozoa Goldfuss, 1818
       Subphylum Ciliophora Doflein, 1901 see Phylum Ciliophora Doflein, 1901
         Class Ciliata see [unranked] ciliates
           Order Hymenostomatida Delage & Hérouard, 1896 see Subclass Hymenostomatia (Delage & Hérouard, 1896) Cavalier-Smith, 1993
             Genus Paramecium Müller, 1773
             Genus Tetrahymena Furgason, 1940