organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     alveolates Cavalier-Smith see [unranked] Alveolata Cavalier-Smith, 1991
       Phylum Ciliophora Doflein, 1901 - ciliates
         Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
           Class Oligohymenophorea de Puytorac et al., 1974 - oligohymenophoreans
             Subclass Peritrichia Stein, 1859
               Order Mobilida Kahl, 1933
                 1 Family Trichodinidae Claus, 1874
                 2 Family Urceolariidae Dujardin, 1840
                 3 Family Leiotrochidae Johnston, 1938
                 4 Family Polycyclidae Poljansky, 1951
                 5 Family Trichodinopsidae Kent, 1881