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
             1 Subclass Protocruziidia de Puytorac et al., 1987
             2 Subclass Hypotrichia (Stein, 1859) Cavalier-Smith, 1993
             3 Subclass Choreotrichia Small & Lynn, 1985
             4 Subclass Stichotrichia Small & Lynn, 1985
             5 Subclass Oligotrichia Bütschli, 1889
             6 ?Order Armophorida Jankowski, 1964
             7 ?Order Odontostomatida Sawaya, 1940 - odontostomatids
             8 ?Order Clevelandellida de Puytorac & Grain, 1976
             9 ?Order Phacodiniida Small & Lynn, 1985