organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Status: extant; Count: -
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
  Status: extant; Count: 1k;12p;37c;157o;717f;2996g;586s; †2o;1g
     alveolates Cavalier-Smith see [unranked] Alveolata Cavalier-Smith, 1991
    Status: extant; Count: 3p;17c;79o;361f;1087g;202s
       Phylum Ciliophora Doflein, 1901 - ciliates
      Status: extant; Count: [o] 10c;57o;258f;679g;1s
         Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
        Status: extant; Count: [o] 8c;52o;245f;647g;1s
           Class Spirotrichea Bütschli, 1889
          Status: extant; Count: [o] 15o;53f;175g
             Subclass Stichotrichia Small & Lynn, 1985
            Status: extant; Count: [f] 4o;12f;77g
               Order Sporadotrichida Fauré-Fremiet, 1961
              Status: extant; Count: [f] 2f;24g
                 Family Oxytrichidae Ehrenberg, 1838
                Status: extant; Count: 19g
                   Genus Sterkiella Foissner et al., 1991
                  Status: extant; Count: -