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 Colpodea Small & Lynn, 1981
             1 Order Bryophryida de Puytorac et al., 1979
             2 Order Colpodidaᵀ de Puytorac et al., 1974
             3 Order Cyrtolophosidida Foissner, 1978
             4 Order Bursariomorphida Fernández-Galiano, 1978
             5 Order Sorogenida Foissner, 1985
             6 Order Bryometopida Foissner, 1985
             7 ?Family Pseudochlamydonellidae Buitkamp et al., 1989
             8 ?Family Tectohymenidae Foissner, 1993