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 Spirotrichea Bütschli, 1889
             Subclass Stichotrichia Small & Lynn, 1985
               Order Stichotrichidaᵀ Fauré-Fremiet, 1961
                 1 Family Spirofilidae von Gelei, 1929
                 2 Family Psilotrichidae Bütschli, 1889
                 3 Family Keronidae Dujardin, 1840
                 4 Family Epiclintidae Wicklow & Borror, 1990
                 5 Family Amphisiellidae Jankowski, 1979
                 6 Family Kahliellidae Tuffrau, 1979