DiatomBase
Between brackets is the number of accepted extant species
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Shows the number of accepted extant species within the taxon
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- Bacillariophyceae (5 957)
- Subclass Bacillariophyceae incertae sedis (189)
- Subclass Bacillariophycidae (4 408)
- Subclass Coscinodiscophycidae (877)
- Superorder Biddulphianae (230)
- Order Anaulales (7)
- Order Biddulphiales (38)
- Order Hemiaulales (17)
- Family Bellerocheaceae Crawford, 1990
- Family Hemiaulaceae Heiberg, 1863 (17)
- Genus Abas R.Ross & P.A.Sims, 1980 †
- Genus Ailuretta P.A. Sims, 1986 †
- Genus Baxteriopsis G. Karsten in A. Engler & K. Prantl, 1928 †
- Genus Bicornis J. Fenner, 1994 † accepted as Fennerbicornis Blanco, 2020 †
- Genus Briggera R. Ross & P.A. Sims, 1985 †
- Genus Cerataulina H. Peragallo ex F. Schütt in Engler & Prantl, 1896
- Genus Climacodium A. Grunow, 1868 (1)
- Genus Cylindrospira A.G.Mitlehner, 1995 †
- Genus Eucampia C.G. Ehrenberg, 1839 (1)
- Species Eucampia antarctica (Castracane) Mangin, 1915 accepted as Moelleria antarctica Castracane, 1886
- Variety Eucampia antarctica var. antarctica
- Variety Eucampia antarctica var. balaustium Beklemishev, 1958
- Variety Eucampia antarctica var. recta (Mangin) G.Fryxell & A.K.S.K.Prasad, 1990
- Forma Eucampia antarctica f. recta Mangin, 1915
- Forma Eucampia antarctica f. spiralis Mangin, 1915
- Species Eucampia antarctica (Ehrenberg) A.Mann, 1937 accepted as Hemiaulus antarcticus Ehrenberg, 1844
- Species Eucampia balaustium Castracane, 1886
- Species Eucampia balaustium sensu Van Heurck, 1909
- Species Eucampia balaustium Van Heurck, 1909
- Species Eucampia biconcava (Cleve) Ostenfeld, 1902 accepted as Climacodium biconcavum Cleve, 1897
- Species Eucampia britannica W.Smith, 1853
- Species Eucampia cornuta (Cleve) Grunow, 1883 accepted as Moelleria cornuta Cleve, 1873
- Species Eucampia groenlandica Cleve, 1896
- Species Eucampia hemiauloides Ostenfeld, 1901
- Species Eucampia minor Castracane in Mangin, 1915
- Species Eucampia nodosa A.Schmidt, 1888
- Species Eucampia payeri Grunow, 1884
- Species Eucampia recta H.H.Gran & T.Braarud, 1935
- Species Eucampia schliephackeana Grunow in litt., Rabenhorst, 1864
- Species Eucampia striata Stolterfoth, 1879
- Species Eucampia virginica Grunow in Van Heurck, 1882
- Species Eucampia zodiacus Ehrenberg, 1839
- Species Eucampia zoodiacus Ehrenberg
- Genus Fennerbicornis Blanco, 2020 †
- Genus Hemiaulus P.A.C. Heiberg, 1863 (10)
- Genus Hemiaulus C.G. Ehrenberg, 1844 accepted as Hemiaulus P.A.C. Heiberg, 1863
- Genus Keratophora J. Pantocsek, 1889 †
- Genus Kittonia E. Grove & G. Sturt, 1887 †
- Genus Pseudorutilaria (Grove & Sturt ex De Toni & Levi) Grove & Sturt ex De Toni, 1894 †
- Genus Riedelia A.P. Jousé & V.S. Sheshukova-Poretzkaja, 1971 accepted as Williamriedelia T.V. Desikachary & P. Prema in Prema & Desikachary, 2012 †
- Genus Rymariopsis J.Witkowski & D.M.Harwood, 2011 †
- Genus Sphynctolethus G D. Hanna, 1927 †
- Genus Strelnikovia R. Ross & P.A. Sims, 1985
- Genus Trinacria P.A.C. Heiberg, 1863 †
- Genus Williamriedelia T.V. Desikachary & P. Prema in Prema & Desikachary, 2012 †
- Genus Williamriedelia S.Blanco & C.E.Wetzel, 2016 † accepted as Williamriedelia T.V. Desikachary & P. Prema in Prema & Desikachary, 2012 † (5)
- Family Streptothecaceae Crawford, 1990
- Order Triceratiales (168)
- Superorder Chaetocerotanae (95)
- Superorder Corethranae (1)
- Superorder Coscinodiscanae (300)
- Superorder Cymatosirophycanae (10)
- Superorder Lithodesmiophycanae (7)
- Superorder Rhizosolenianae (37)
- Superorder Thalassiosiranae (192)
- Order Arcanodiscales (5)
- Order Stictocyclales
- Subclass Fragilariophycidae (483)
- Order Centrales
