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
           1 Class Spirotrichea Bütschli, 1889
           2 Class Litostomatea Small & Lynn, 1981
           3 Class Phyllopharyngea de Puytorac et al., 1974
           4 Class Nassophorea Small & Lynn, 1981
           5 Class Colpodea Small & Lynn, 1981
           6 Class Prostomatea Schewiakoff, 1896
           7 Class Plagiopylea Small & Lynn, 1985
           8 Class Oligohymenophorea de Puytorac et al., 1974 - oligohymenophoreans