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 Thalassiosiraceaeᵀ M. Lebour (1930), nom. cons.
Genus Thalassiosiraᵀ Cleve (1873)
Thalassiosira allenii Takano
Thalassiosira angstii (Gran, in Gran & Angst) Makarova (1970)
Thalassiosira angulata (Gregory) Hasle (1978)
Thalassiosira anguste-lineata (A.Schmidt) G. Fryxell & Hasle (1977)
Thalassiosira antarctica Comber (1896)
Thalassiosira bioculata (Grunow) Ostenfeld (1903)
Thalassiosira bramaputrae (Ehrenberg) Håkansson & Locker (1981)
Thalassiosira decipiens (Grunow, in Van Heurck) Jörgensen (1905)
Thalassiosira eccentrica (Ehrenberg) Cleve (1903)
Thalassiosira gessneri
Thalassiosira gracilis
Thalassiosira gravida Cleve (1896)
Thalassiosira guillardii Hasle (1978)
Thalassiosira hyalina (Grunow, in Cleve & Grunow, 1880) Gran
Thalassiosira incerta Makarova (1979)
Thalassiosira lacustris (Grunow) Hasle
Thalassiosira leptopa (Grunow) Hasle & Fryxell (1977)
Thalassiosira levanderi Van Goor
Thalassiosira mediterranea (Schröder, 1911) Hasle (1972)
Thalassiosira minuscula Krasske (1841)
Thalassiosira nordenskioeldii Cleve (1873)
Thalassiosira oestrupii (Ostenfeld, 1900) Hasle
Thalassiosira poroseriata (Ramsfjell) Hasle (1972)
Thalassiosira profunda (Hendey) Hasle
Thalassiosira proschkinae Makarova (1979)
Thalassiosira pseudonana Hasle & Heimdal (1970)
Thalassiosira punctigera (Castracane)
Thalassiosira rotula Meunier (1915)
Thalassiosira subtilis (Ostenfeld) Gran
Thalassiosira tenera Proshkina-Lavrenko (1961)
Thalassiosira visurgis Hustedt (1957)
Thalassiosira weissflogii (Grunow) G. Fryxell & Hasle (1977)