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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- Biota (879)
- Kingdom Animalia (681)
- Kingdom Bacteria (5)
- Kingdom Chromista (179)
- Subkingdom Hacrobia (4)
- Subkingdom Harosa (91)
- Phylum Bacillariophyta
- Phylum Heterokontophyta (84)
- Subphylum Bacillariophytina (84)
- Class Bacillariophyceae (84)
- Subclass Bacillariophyceae incertae sedis
- Subclass Bacillariophycidae (22)
- Subclass Coscinodiscophycidae (57)
- Subclass Fragilariophycidae (5)
- Superorder Fragilariophycanae (5)
- Order Fragilariales (3)
- Family Fragilariaceae Greville, 1833 (3)
- Genus Asterionella A.H. Hassall, 1850 (1)
- Genus Asterionellopsis F.E. Round in F.E. Round, R.M. Crawford & D.G. Mann, 1990
- Genus Asteroplanus C. Gardner & R.M. Crawford in R.M. Crawford & C. Gardner, 1997
- Genus Ceratoneis C.G. Ehrenberg, 1839 accepted as Cylindrotheca L. Rabenhorst, 1859
- Genus Diatoma J.B.M. Bory de Saint-Vincent, 1824 (1)
- Genus Fragilaria H.C. Lyngbye, 1819
- Genus Synedra C.G. Ehrenberg, 1830 (1)
- Species Synedra acus Kützing, 1844 accepted as Synedra radians var. radians Kützing, 1844
- Species Synedra nitzschioides Maly, 1895
- Species Synedra radians W. Smith, 1853
- Species Synedra ulna (Nitzsch) Ehrenberg, 1832
- Variety Synedra ulna var. subcontracta Østrup in Héribaud et al., 1920
- Genus Ulnaria (Kützing) P. Compère, 2001
- Order Thalassionematales (2)
- Kingdom Plantae (14)
- Kingdom Protozoa