Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
[crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Clade neomura Cavalier-Smith, 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
Clade discaria Cavalier-Smith, 2021
Clade natates Cavalier-Smith, 2021
Clade photaria Cavalier-Smith, 2021
Clade eucorta Cavalier-Smith, 2021
Superkingdom Corticata Lankester, 1878 - corticates
Kingdom Chromista Caval.-Sm. (1981) - chromists
Subkingdom Harosa Cavalier-Smith, 2010
[crown] Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
Infrakingdom Halvaria Cavalier-Smith, 2010
Superphylum Heterokonta Caval.-Sm. (1986)
Phylum Ochrophyta Caval.-Sm. (1995)
Subphylum Khakista Caval.-Sm. (2000)
Diatomea Kütz. (1844)
Class Mediophyceae Medlin & Kaczmarska (2004) [paraphyletic] - bipolar centrics
Order Thalassiosirales Glezer & I.V. Makarova (1986)
Family Stephanodiscaceae Glezer & Makarova (1986)
Genus Cyclotella (Kütz.) Bréb. (1838)
Cyclotella agassizensis Håkansson & Kling (1994)
Cyclotella ambigua Grunow, in Cleve & Grunow (1880)
Cyclotella americana Fricke
Cyclotella antiqua W.Sm. (1853)
Cyclotella areolata Hustedt (1935)
Cyclotella atomus Hustedt (1937)
Cyclotella azigzensis Flower, Gasse & Håkansson (1990)
Cyclotella baikalensis Skvortsov & Meyer (1928)
Cyclotella bastowii J.R. Carter (1961)
Cyclotella bodanica Grunow, in Schneider (1878)
Cyclotella bornata (Skvortsov) Flower (1993)
Cyclotella caspia Grunow, in Schneider (1878)
Cyclotella catenata (Brun) Bachm. (1911)
Cyclotella chaetoceras Lemm.
Cyclotella choctawhatcheeana Prasad (1990)
Cyclotella comensis Grunow, in Van Heurck (1882)
Cyclotella cyclopuncta Håkansson & J.R. Carter (1990)
Cyclotella delicatissima J.R. Carter, in J.R. Carter & Bailey-Watts (1981)
Cyclotella delicatula Hustedt (1952)
Cyclotella distinguenda Hustedt (1927)
Cyclotella elgeri Hustedt (1952)
Cyclotella fottii Hustedt, in Hub.-Pest. (1942)
Cyclotella gamma Sovereign (1963)
Cyclotella glabriuscula (Grunow) Håkansson (1988)
Cyclotella glomerata H. Bachm. (1911)
Cyclotella hakanssoniae Wendker (1990)
Cyclotella krammeri Håkansson (1990)
Cyclotella kurdica Håkansson (1993)
Cyclotella meduanae Germain (1981)
Cyclotella meneghiniana Kützing (1844)
Cyclotella michiganiana Skvortsov (1937)
Cyclotella ocellata Pant. (1902)
Cyclotella orientalis J.H. Lee, J. Chung & T. Gotoh (1995)
Cyclotella papillosa O'Meara (1875)
Cyclotella planctonica Brunnthaler (1901)
Cyclotella plitvicensis Hustedt (1945)
Cyclotella polymorpha B.Mey. & H. Håkansson (1996)
Cyclotella praetermissa Lund (1951)
Cyclotella pseudocomensis W. Scheffler (1994)
Cyclotella pseudostelligera Hustedt (1939)
Cyclotella quadrijuncta (Schröter) von Keissler (1910)
Cyclotella quillensis Bailey (1922)
Cyclotella radiosa (Grunow) Lemmerman (1900)
Cyclotella rossii Håkansson (1990)
Cyclotella scaldensis
Cyclotella schumannii (Grunow) Håkansson
Cyclotella sevillana Deby (1884)
Cyclotella sexnotata Deby (1884)
Cyclotella socialis Schutt (1899)
Cyclotella stelligera Cleve & Grunov
Cyclotella stelligeroides Hustedt (1945)
Cyclotella striata (Kützing) Grunow, in Cleve & Grunow (1880)
Cyclotella styriaca Hustedt, in Hub.-Pest. (1942)
Cyclotella tasmanica Haworth & P.A. Tyler (1993)
Cyclotella trichonidea Economou-Amilli (1982)
Cyclotella tripartita Håkansson
Cyclotella veneta
Cyclotella vorticosa A. Berg, in A.Cleve (1951)
Cyclotella wuethrichiana Druart & Straub (1988)
Cyclotella wulfiae B.Mey. & Håkansson (1997)