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
             Order Colpodidaᵀ de Puytorac et al., 1974
               Family Colpodidaeᵀ Bory de St. Vincent, 1826
                 1 Genus Bresslaua Kahl, 1931
                 2 Genus Krassniggia Foissner, 1987
                 3 Genus Colpoda Müller, 1773