DiatomBase
Between brackets is the number of accepted extant species
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Shows the number of accepted extant species within the taxon
The last expanded taxon is highlighted
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- Bacillariophyceae (5 962)
- Subclass Bacillariophyceae incertae sedis (193)
- Subclass Bacillariophycidae (4 408)
- Subclass Coscinodiscophycidae (878)
- Superorder Biddulphianae (230)
- Order Anaulales (7)
- Order Biddulphiales (38)
- Family Biddulphiaceae Kützing, 1844 (37)
- Genus Alveoflexus N.I. Hendey & P.A. Sims, 1984 †
- Genus Ancoropsis N.I. Hendey & P.A. Sims, 1984 †
- Genus Arcusidiscus S.Komura, 2008
- Genus Biddulphia S.F. Gray, 1821 (24)
- Genus Biddulphiopsis H.A. von Stosch & R. Simonsen, 1984
- Genus Donskinica Strelnikova & Kozyrenko †
- Genus Euodiella P.A. Sims, 2000 †
- Genus Fenneria J.Witkowski, 2018 †
- Genus Hydrosera G.C. Wallich, 1858 (2)
- Genus Isthmia C.A. Agardh, 1832 (5)
- Genus Medlinia P.A.Sims, 1998 †
- Genus Neohuttonia O. Kuntze, 1898
- Species Neohuttonia alternans (Grove & Sturt) Kuntze, 1898 accepted as Huttonia alternans Grove & Sturt, 1887
- Species Neohuttonia labuani (Cleve) Kuntze, 1898 accepted as Cerataulus labuensis var. labuensis Cleve, 1883
- Species Neohuttonia reedii (Bone & Gosden) Desikachary & Sreelatha, 1989 accepted as Huttonia reedii Bone & Gosden, 1967
- Species Neohuttonia reichardtii (Grunow) Hustedt accepted as Cerataulus reichardtii Grunow, 1863
- Species Neohuttonia reversa (Grove & Sturt) Desikachary & Sreelatha, 1989 accepted as Biddulphia reversa Grove & Sturt, 1887
- Species Neohuttonia tripartita (Barker & Meakin) Desikachary & Sreelatha, 1989 accepted as Huttonia tripartita Barker & Meakin, 1946
- Species Neohuttonia virgata (Grove & Sturt) Kuntze, 1898 accepted as Huttonia virgata Grove & Sturt, 1887
- Genus Pseudotriceratium A. Grunow, 1884
- Genus Stoermeria J.P. Kociolek, L. Escobar & S. Richardson, 1996
- Genus Terpsinoë C.G. Ehrenberg, 1843 (4)
- Genus Trigonium P.T. Cleve, 1867 (2)
- Genus Crawfordia P.A.Sims, J.Witkowski & E.A.César †
- Genus Entogoniopsis P.A.Sims, N.I.Strelnikova, J.Witkowski & D.M.Williams, 2015 (1)
- Genus Trilamina P.A.Sims, J.Witkowski, N.I.Strelnikova & D.M.Williams, 2015 †
- Order Hemiaulales (17)
- Order Triceratiales (168)
- Superorder Chaetocerotanae (95)
- Superorder Corethranae (1)
- Superorder Coscinodiscanae (300)
- Superorder Cymatosirophycanae (10)
- Superorder Lithodesmiophycanae (7)
- Superorder Rhizosolenianae (38)
- Superorder Thalassiosiranae (192)
- Order Arcanodiscales (5)
- Order Stictocyclales
- Subclass Fragilariophycidae (483)
- Order Centrales
