DiatomBase
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- Bacillariophyceae (5 957)
- Subclass Bacillariophyceae incertae sedis (189)
- Subclass Bacillariophycidae (4 408)
- Superorder Bacillariophycanae (4 083)
- Order Achnanthales (438)
- Family Achnanthaceae Kützing, 1844 (111)
- Family Achnanthidiaceae D.G. Mann, 1990 (244)
- Genus Achnantheiopsis Lange-Bert., 1997 accepted as Planothidium F.E. Round & L. Bukhtiyarova, 1996 (1)
- Genus Achnanthidium F.T. Kützing, 1844 (57)
- Species Achnanthidium acerosum Van de Vijver, Lange-Bert. & Jarlman in Van de Vijver et al., 2011
- Species Achnanthidium acsiae Wojtal, E. Morales, Van de Vijver & Ector in Wojtal et al., 2011
- Species Achnanthidium acutum L.F.Costa, C.E.Wetzel & Ector in Costa et al., 2022
- Species Achnanthidium affine (Grunow) Czarnecki, 1994 accepted as Achnanthes affinis var. affinis Grunow in Cleve & Grunow, 1880
- Species Achnanthidium agardhii (Kützing) Mereschkowsky, 1903 accepted as Cymbosira agardhii Kützing, 1844
- Species Achnanthidium agglutinans ‘Grunow in Cleve & Grunow' VanLandingham, 1880
- Species Achnanthidium agglutinata ‘Grunow in Cleve & Grunow' Mills, 1933
- Species Achnanthidium alpestre (R.Lowe & J.P.Kociolek) R.Lowe & J.P.Kociolek in J.R.Johansen et al., 2004
- Species Achnanthidium alteragracillimum Round & Bukhtiyarova, 1996
- Species Achnanthidium altergracillima (Lange-Bertalot) Round & Bukhtiyarova, 1996 accepted as Achnanthes alteragracillima Lange-Bert., 1993
- Species Achnanthidium anastasiae (Kaczmarska) Chaudev & Gololobova
- Species Achnanthidium anhuense P. Yu, Q. M. You & Q. X. Wang in Yu et al., 2022
- Species Achnanthidium archibaldianum (Lange-Bertalot) Lange-Bertalot, 1999 accepted as Achnanthes archibaldiana Lange-Bert., 1989
- Species Achnanthidium arcticum Cleve, 1873
- Species Achnanthidium arcus (Hustedt) Lange-Bertalot, 1999
- Species Achnanthidium atomoides O.Monnier, Lange-Bert. & L.Ector in O.Monnier et al., 2004
- Species Achnanthidium atomus (Hustedt) Monnier, Lange-Bertalot & Ector in Monnier et al., 2004 accepted as Achnanthes atomus var. atomus Hust., 1937
- Species Achnanthidium australexiguum Van de Vijver in Taylor et al., 2014
- Species Achnanthidium baccata ‘Leuduger-Fortmorel' Mills, 1933
- Species Achnanthidium baldjikii Grunow in Schmidt et al., 1895 accepted as Odontidium baldjicki Brightwell, 1859
- Species Achnanthidium barbei R.Le Cohu & F.Peres, 2014
- Species Achnanthidium biasolettianum (Grunow) Bukhtiyarova, 1995 accepted as Achnanthes biasolettiana var. biasolettiana Grunow
- Species Achnanthidium bioretii (Germain) O.Monnier, Lange-Bert. & L.Ector, 2007 accepted as Psammothidium bioretii (Germain) L.N.Bukhtiyarova & Round, 1996
- Species Achnanthidium biporomum (M.H.Hohn & J.Hellerman) D.B.Czarnecki, 1995 accepted as Planothidium biporomum (M.H.Hohn & Hellerman) Lange-Bertalot, 1999
- Species Achnanthidium blancheanum (Maillard) Lange-Bertalot, 1999 accepted as Achnanthes blancheana R.Maillard ex Lange-Bertalot & A. Steindorf, 1995
- Species Achnanthidium boreale Poretszky, 1927
- Species Achnanthidium brasiliense L.F.Costa & G.C.Marquardt in Costa et al., 2022
- Species Achnanthidium brevipes (C.Agardh) Heiberg, 1863 accepted as Achnanthes brevipes C.Agardh, 1824
- Species Achnanthidium brevipes (Agardh) Cleve, 1895 accepted as Achnanthes brevipes var. brevipes Agardh, 1824
- Species Achnanthidium cadimae E.A. Morales, E. Fernández & L. Ector, 2011
- Species Achnanthidium caledonicum (Lange-Bertalot) Lange-Bertalot, 1999
- Species Achnanthidium capitatum Riaux Gobin, Romero, Compère & Al Handal, 2011 accepted as Madinithidium capitatum (C.Riaux-Gobin, O.Romero, P.Compère & A.Handal) A.Witkowski, C.Riaux-Gobin & C.Desrosiers, 2014
- Species Achnanthidium caravelense M.E. Novais & L. Ector in M.E. Novais et al., 2011
- Species Achnanthidium catenatum (Bily & Marvan) Lange-Bertalot, 1999 accepted as Achnanthes catenata Bily & Marvan, 1959
- Species Achnanthidium cavitatum M. Miao & B.-H. Kim in Miao et al., 2020
- Species Achnanthidium chitrakootense A.Z.Wojtal, H.Lange-Bertalot & P.Nautiyal, 2010
- Species Achnanthidium chlidanos (Hohn & Hellerman) E.Novelo, R.Tavera & C.Ibarra, 2007 accepted as Achnanthes chlidanos M.H.Hohn & Hellerman, 1963
- Species Achnanthidium clevei (Grunow) D.B.Czarnecki, 1995 accepted as Achnanthes clevei var. clevei Grunow, 1880
- Species Achnanthidium coarctatum Brébisson ex W.Smith, 1855 accepted as Achnanthes coarctata (Brébisson ex W.Smith) Grunow, 1880
- Species Achnanthidium cocconeiforme Mereschkowsky, 1901
- Species Achnanthidium cocconeiforme Mereschkowsky, 1902
- Species Achnanthidium contractum Schumann, 1867
- Species Achnanthidium contrarea (Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot) H. Lange-Bertalot, 1999 accepted as Achnanthes contrarea Lange-Bertalot & A.Steindorf, 1995
- Species Achnanthidium convergens (Kobayasi) Kobayasi, 1997 accepted as Achnanthes convergens H.Kobayasi ex H.Kobayshi, Nagumo & Mayama, 1986
- Species Achnanthidium costatum Plutenko, 1873
- Species Achnanthidium costei R.Le Cohu & F.Peres, 2014
- Species Achnanthidium crassum (Hustedt) Potapova & Ponader accepted as Achnanthes crassa Hustedt, 1937
- Species Achnanthidium craterianum Marquardt & C.E.Wetzel, 2023 †
- Species Achnanthidium crenulatum ‘Grunow' Mills, 1933
- Species Achnanthidium cryptocephalum Naegeli ex Kützing, 1849
- Species Achnanthidium cryptocephalum ‘Grunow' Mills, 1933
- Species Achnanthidium cubanense D.Metzeltin & Lange-Bertalot, 2007
- Species Achnanthidium cuneata ‘Grunow' Mills, 1933
- Species Achnanthidium danicum Flogel in Schmidt et al., 1895
- Species Achnanthidium daonense (Lange-Bertalot) Lange-Bertalot, O.Monnier & L.Ector, 2007 accepted as Achnanthes daonensis Lange-Bertalot, 1989
- Species Achnanthidium deflexum (C.W.Reimer) J.C.Kingston, 2000 accepted as Achnanthes deflexa C.W.Reimer, 1966
- Species Achnanthidium delicatulum Kützing, 1844 accepted as Planothidium delicatulum (Kützing) Round & Bukhtiyarova, 1996
- Species Achnanthidium delicatulum sensu Schumann, 1867
- Variety Achnanthidium delicatulum var. angustatum Gutwinski, 1890
- Variety Achnanthidium delicatulum var. wislouchii Shirshov, 1935
- Forma Achnanthidium delicatulum f. delicatulum Kützing, 1844
- Species Achnanthidium delmontii F.Pérès, R.le Cohu & A.Barthès, 2012
- Species Achnanthidium dolomiticum M.Cantonati & Lange-Bertalot, 2006
- Species Achnanthidium druartii Rimet & Couté, 2010
- Species Achnanthidium duthiei (M.R.Sreenivasa) Edlund, 1994 accepted as Achnanthes duthiei Sreenivasa, 1971 †
- Species Achnanthidium ectorianum Marquardt & C.E.Wetzel, 2023 †
- Species Achnanthidium elineatum Lagerstedt
- Species Achnanthidium enigmaticum E.Morales & Manoylov, 2023
- Species Achnanthidium ennediense (Compère) Compère & Van de Vijver, 2011
- Species Achnanthidium epilithica P. Yu, Q-M. You & Q-X Wang
- Species Achnanthidium ertzii Van de Vijver & Lange-Bert. in Van de Vijver et al., 2011
- Species Achnanthidium eutrophilum (Lange-Bertalot) Lange-Bertalot, 1999 accepted as Achnanthes eutrophila Lange-Bertalot, 1996
- Species Achnanthidium exiguum (Grunow) D.B.Czarnecki, 1994 accepted as Achnanthes exigua var. exigua Grunow in Cleve & Grunow, 1880
- Species Achnanthidium exile (Kützing) Heiberg, 1863 accepted as Achnanthes exilis var. exilis Kützing, 1833
- Species Achnanthidium flexellum (Kützing) Brébisson ex Kützing, 1849 accepted as Eucocconeis flexella (Kützing) Meister, 1912
- Species Achnanthidium flexuistriatum Riaux-Gobin, Compère & Witkowski, 2010
- Species Achnanthidium fulla (J.R.Carter) M.Aboal, 2003 accepted as Achnanthes fulla J.R.Carter, 1970
- Species Achnanthidium glyphos Riaux-Gobin, Compère & Witkowski, 2010
- Species Achnanthidium gracillimum (Meister) Lange-Bertalot, 2004 accepted as Microneis gracillima Meister, 1912
- Species Achnanthidium groenlandicum Cleve, 1873
- Species Achnanthidium guizhouensis P. Yu, Q–M. You & Kociolek
- Species Achnanthidium hauckianum (Grunow) D.B.Czarnecki, 1994 accepted as Achnanthes hauckiana var. hauckiana Grunow in Cleve & Grunow, 1880
- Species Achnanthidium hauckii (Grunow) Comber, 1901 accepted as Achnanthes hauckii Grunow in Van Heurck, 1880
- Species Achnanthidium haynaldii (Schaarschmidt) Morosov, 1929 accepted as Planothidium haynaldii (Schaarschmidt) Lange-Bertalot, 1999
- Species Achnanthidium helveticum (Hustedt) Monnier, Lange-Bertalot & Ector, 2007 accepted as Achnanthes austriaca var. helvetica Hust., 1933
- Species Achnanthidium hoffmannii Van de Vijver, Ector, Mertens & Jarlman in Van de Vijver et al., 2011
- Species Achnanthidium hungaricum Grunow, 1863
- Species Achnanthidium indicatrix (Lange-Bertalot & Steindorf) Lange-Bertalot, 1999 accepted as Achnanthes indicatrix Lange-Bertalot & A.Steindorf, 1998
- Species Achnanthidium inflatum (Kützing) Hutton, 1883 accepted as Stauroneis inflata var. inflata Kützing, 1844
- Species Achnanthidium intermedium ‘Gutwinski, 1892' according to Hollerbakh & Krasavina, 1892
- Species Achnanthidium jackii Rabenhorst, 1861
- Species Achnanthidium japonicum (Kobayasi) Kobayasi, 1997 accepted as Achnanthes japonica Kobayasi, 1965
- Species Achnanthidium jiuzhaienis P. Yu, Q-M. You & Q-X Wang
- Species Achnanthidium kangdingnese P.Yu, Q.M.You & Q.X.Wang
- Species Achnanthidium kenyae (Cholnoky) C.Cocquyt, 2007 accepted as Achnanthes kenyae Cholnoky, 1960
- Species Achnanthidium koghisense (Moser, Lange-Bertalot & Metzeltin) Lange-Bertalot, 1999 accepted as Achnanthes koghisensis G.Moser, Lange-Bertalot & D.Metzeltin, 1998
- Species Achnanthidium kranzii (Lange-Bertalot) Round & Bukhtiyarova, 1996 accepted as Achnanthes kranzii Lange-Bertalot, 1989
- Species Achnanthidium kriegeri (Krasske) P.B.Ham., D.Anton. & Siver in Antoniades et al., 2008 accepted as Rossithidium kriegeri (Krasske) Bahls, 2019
- Species Achnanthidium kryophila (J.B.Petersen) Bukhtiyarova, 1995 accepted as Achnanthes kryophila var. kryophila J.B.Petersen, 1924
- Species Achnanthidium kuwaitensis ‘Hendey' VanLandingham, 1967
- Species Achnanthidium lacustre P. Yu, Q–M. You & Kociolek in Yu et al., 2019
- Species Achnanthidium lailae Van de Vijver in Zidarova et al., 2009
- Species Achnanthidium lanceolatum Brébisson ex Kützing, 1846 accepted as Planothidium lanceolatum (Brébisson ex Kützing) Bukhtiyarova, 1999
- Species Achnanthidium lapidosum (Krasske) Kobayasi, 2002 accepted as Nupela lapidosa (Krasske) Lange-Bertalot, 1999
- Species Achnanthidium latecephalum H.Kobayasi, 1997
- Species Achnanthidium lauenburgianum (Hustedt) Monnier, Lange-Bertalot & Ector, 2007 accepted as Achnanthes lauenburgiana Hustedt, 1950
- Species Achnanthidium levanderi (Hustedt) D.B.Czarnecki, 1995 accepted as Achnanthes levanderi var. levanderi Hustedt, 1933
- Species Achnanthidium limosua P. Yu, Q-M. You & Q-X Wang
- Species Achnanthidium lineare W.Smith, 1855
- Species Achnanthidium linearioide H. Lange-Bertalot in Krammer & Lange-Bertalot, 2004
- Species Achnanthidium longipes Kisselev, 1931
- Species Achnanthidium longissimum P. Yu, Q-M. You & Kociolek in Yu et al., 2019
- Species Achnanthidium lorenziana (Grunow) Grunow in Schmidt et al., 1895 accepted as Rhaphoneis lorenziana var. lorenziana Grunow, 1862
- Species Achnanthidium lucectorii E.Morales & Manoylov, 2023
- Species Achnanthidium lyra Schumann, 1867
- Species Achnanthidium macrocephalum (Hustedt) Round & Bukhtiyarova, 1996 accepted as Achnanthes minutissima var. macrocephala Hustedt, 1937
- Species Achnanthidium mangelsdorffii D. Metzeltin & H. Lange-Bertalot, 2007
- Species Achnanthidium mangelsdorfii D.Metzeltin & Lange-Bertalot, 2007
- Species Achnanthidium margaritarum Cleve, 1893
- Species Achnanthidium margaritarum (Cleve) Cleve, 1895 accepted as Achnanthes margaritarum Cleve, 1893
- Species Achnanthidium maximum Cleve-Euler, 1895
- Species Achnanthidium mediolanceolatum P. Yu, Q–M. You & Kociolek
- Species Achnanthidium metaffine (Lange-Bertalot & Steindorf) Lange-Bertalot, 1999 accepted as Achnanthes metaffinis Lange-Bertalot & A.Steindorf, 1995
- Species Achnanthidium microcephalum Kützing, 1844
- Species Achnanthidium microcephalum sensu W. Smith, 1856
- Species Achnanthidium microcephalum Mereschkowsky, 1901
- Species Achnanthidium microcephalum sensu Neupauer, 1867
- Species Achnanthidium minutissimum (Kützing) Czarnecki, 1994 accepted as Achnanthes minutissima var. minutissima Kützing, 1833
- Species Achnanthidium minutum Cleve, 1891
- Species Achnanthidium modestiforme (Lange-Bert.) Van de Vijver in Van de Vijver et al., 2002
- Species Achnanthidium naviculoides Reinsch, 1866
- Species Achnanthidium neglectum Schumann, 1867
- Species Achnanthidium neomicrocephalum Lange-Bertalot & F.Staab, 2004
- Species Achnanthidium neotropicum Krahn & C.E.Wetzel in Krahn et al., 2018
- Species Achnanthidium obliquum Mereschkowsky, 1902
- Species Achnanthidium obtusum Schumann, 1867
- Species Achnanthidium otrantinum Rabenhorst, 1853
- Species Achnanthidium ovale M. Miao & B.-H. Kim in Miao et al., 2020
- Species Achnanthidium ovatum To.Watan. & Tuji in Watanabe et al., 2008
- Species Achnanthidium palmeti G.Gassiole, R. le Cohu & M.Coste, 2013
- Species Achnanthidium parallelum J.R.Carter ex Jüttner, D.M.Williams, Ector & C.E.Wetzel
- Species Achnanthidium parvicapitatum L.F.Costa, Ector & C.E.Wetzel in Costa et al., 2022
- Species Achnanthidium parvulum Q–M. You, P. Yu & Kociolek
- Species Achnanthidium paulistanum L.F.Costa & D.Bicudo in Costa et al., 2022
- Species Achnanthidium peragalloi Brun & Héribaud in Héribaud, 1893
- Species Achnanthidium peragalloi Tempère in Tempère & Peragallo, 1914
- Species Achnanthidium peridotiticum (Moser, Lange-Bertalot & Metzeltin) Lange-Bertalot, 1999 accepted as Achnanthes peridotitica Moser, Lange-Bertalot & Metzeltin, 1998
- Species Achnanthidium perpusilla ‘(Pantocsek) Cleve' VanLandingham, 1979
- Species Achnanthidium peruvianum E.Morales & L.Ector, 2011
- Species Achnanthidium petersenii (Hustedt) C.E.Wetzel, Ector, D.M.Williams & Jüttner
- Species Achnanthidium pfisteri H. Lange-Bertalot in Werum & Lange-Bertalot, 2004
- Species Achnanthidium pirogueanum (Maillard) Lange-Bertalot, 1999 accepted as Achnanthes pirogueana R.Maillard, 1978
- Species Achnanthidium polonicum B. Van de Vijver, A. Wojtal, E. Morales & L. Ector, 2011
- Species Achnanthidium pseudochamaepinnularia Riaux-Gobin, Compère & Witkowski, 2010
- Species Achnanthidium pseudoconspicuum (Foged) Jüttner & E.J.Cox, 2011
- Species Achnanthidium pseudodelicatissimum Riaux-Gobin, Witkowski & Compère, 2010
- Species Achnanthidium pseudolineare Van de Vijver, Novais & Ector in Van de Vijver et al., 2011
- Species Achnanthidium pulchellum 'Brébisson ?' according to VanLandingham
- Species Achnanthidium pusillum (Grunow in Cleve & Grunow) Czarnecki in Czarnecki & Edlund, 1995 accepted as Achnanthes pusilla Grunow in Cleve & Grunow, 1880
- Species Achnanthidium pyrenaicum (Hustedt) H.Kobayasi, 1997 accepted as Achnanthes pyrenaica var. pyrenaica Hustedt, 1939
- Species Achnanthidium qingxiense Q. M. You, P. Yu & Q. X. Wang in Yu et al., 2022
- Species Achnanthidium reimeri (Camburn) Ponader & Potapova, 2007 accepted as Achnanthes reimeri Camburn in Camburn, Lowe & Stoneburner, 1978
- Species Achnanthidium ritae L.F.Costa in Costa et al., 2022
- Species Achnanthidium rivulare Potapova & Ponader
- Species Achnanthidium robustum (Hustedt) T. Ohtsuka in Ohtsuka et al., 2007 accepted as Achnanthes minutissima var. robusta Hustedt, 1937
- Species Achnanthidium rosenstockii (Lange-Bertalot) Lange-Bertalot, 2004 accepted as Achnanthes rosenstockii Lange-Bertalot, 1989
- Species Achnanthidium rostrata ‘Østrup' Mills, 1933
- Species Achnanthidium rostropyrenaicum I.Jüttner & E.J.Cox, 2011
- Species Achnanthidium saprophilum (H.Kobayasi & S.Mayama) Round & L.Bukhtiyarova, 1996 accepted as Achnanthes minutissima var. saprophila H.Kobayasi & Mayama, 1982
- Species Achnanthidium scalariforme Riaux-Gobin, Compère & Witkowski, 2010
- Species Achnanthidium sehuencoensis E.Morales, 2009
- Species Achnanthidium semiaperta (Guermeur) Andresen Stoermer & Kreis
- Species Achnanthidium semiapertum (P. Guermeur) N.A. Andresen, E.F. Stoermer & R.G. Kreis, Jr., 2000 accepted as Achnanthes exigua f. semiaperta Guermeur, 1954
- Species Achnanthidium sibiricum M.Kulikovskiy, H.Lange-Bertalot, A.Witkowski & G.Khursevich, 2011
- Species Achnanthidium sieminskae A.Witkowski, M.Kulikovskiy & C.Riaux-Gobin, 2012
- Species Achnanthidium sinense Bing Liu & S. Blanco, 2016
- Species Achnanthidium standeri (Cholnoky) J.C.Taylor, E.Morales & L.Ector, 2011 accepted as Achnanthes standeri Cholnoky, 1957
- Species Achnanthidium straubianum (Lange-Bertalot) Lange-Bertalot, 1999 accepted as Achnanthes straubiana Lange-Bertalot, 1996
- Species Achnanthidium strictum E. Reichardt, 2004
- Species Achnanthidium subatomoides (Hustedt) O. Monnier, H. Lange-Bertalot & L. Ector in Monnier et al., 2007 accepted as Navicula subatomoides Hustedt, 1936
- Species Achnanthidium subatomus (Hustedt) Lange-Bertalot, 1999 accepted as Achnanthes subatomus Hustedt, 1939
- Species Achnanthidium subhudsonis (Hustedt) H.Kobayasi, 2006 accepted as Achnanthes subhudsonis var. subhudsonis Hustedt, 1921
- Species Achnanthidium subhungaricum Gutwinski, 1890
- Species Achnanthidium sublanceolatum P. Yu, Q–M. You & Kociolek in Yu et al., 2019
- Species Achnanthidium sublineare Van de Vijver, Jarlman & Ector in Van de Vijver et al., 2011
- Species Achnanthidium subsalsum (J.B.Petersen) M.Aboal, 2003 accepted as Achnanthes subsalsa J.B.Petersen, 1928
- Species Achnanthidium subsessile (Kützing) Heiberg
- Species Achnanthidium subtilissimum P. Yu, Q-M. You & Q-X Wang
- Species Achnanthidium taiaense (Carter & Denny) Taylor, Morales & Ector, 2011 accepted as Achnanthes taiaensis Carter & Denny, 1982
- Species Achnanthidium taipingensis P. Yu, Q–M. You & Kociolek in Yu et al., 2019
- Species Achnanthidium temniskovae P. Ivanov & L. Ector, 2006
- Species Achnanthidium tepidaricola Van de Vijver & M.De Haan, 2011
- Species Achnanthidium tetrasterias Krishtofovich, 1941
- Species Achnanthidium thermale Rabenhorst, 1864 accepted as Crenotia thermalis (Rabenhorst) Wojtal
- Species Achnanthidium thienemannii (Hustedt) Lange-Bertalot accepted as Achnanthes thienemannii Hustedt, 1942
- Species Achnanthidium tibeticum Y.Liu & Kociolek in Ge et al., 2022
- Species Achnanthidium tinea Tseplik, Kulikovskiy, Kociolek & Maltsev in Tseplik et al. 2021
- Species Achnanthidium trinode Ralfs, 1861
- Species Achnanthidium undulatum Schumann, 1867
- Species Achnanthidium vandevijveri L.F.Costa, Ector & C.E.Wetzel in Costa et al., 2022
- Species Achnanthidium woltereckii (Hustedt) Lange-Bertalot, 1999 accepted as Achnanthes woltereckii var. wolterecki Hustedt, 1942
- Species Achnanthidium zelleri Kirchner, 1888
- Species Achnanthidium zhakovschikovii M.Potapova, 2006
- Genus Crenotia Wojtal, 2013 (8)
- Genus Eucocconeis P.T. Cleve ex F. Meister, 1912 (4)
- Genus Gliwiczia M.Kulikovskiy, Lange-Bertalot & A.Witkowski, 2013 (5)
- Genus Gliwiczia Kulikovskiy, M., Lange-Bertalot, H. & Witkowski, A., 2013
- Genus Gololobovia Kulikovskiy, Glushchenko, Genkal & Kociolek in Kulikovskiy et al., 2020 (4)
- Genus Karayevia F.E. Round & L. Bukhtiyarova ex F.E. Round, 1998 (19)
- Genus Kolbesia F.E. Round & L. Bukhtiyarova ex F.E. Round, 1998 (2)
- Genus Lemnicola F.E. Round & P.W. Basson, 1997
- Genus Madinithidium C.Desrosiers, A.Witkowski & C.Riaux-Gobin, 2014 (7)
- Genus Majewskaea Van de Vijver, K.Robert, Witkowski & Bosak, 2020 (1)
- Genus Planothidium F.E. Round & L. Bukhtiyarova, 1996 (71)
- Genus Platebaikalia Kulikovskiy, Glushchenko, Genkal et Kociolek in Kulikovskiy et al., 2020 (1)
- Genus Psammothidium L. Bukhtiyarova & F.E. Round, 1996 (35)
- Genus Pseudachnanthidium Riaux-Gobin in Riaux-Gobin & Witkowski, 2015 (1)
- Genus Rossithidium F.E. Round & L. Bukhtiyarova, 1996 (3)
- Genus Skabitschewskia Kulikovskiy & Lange-Bertalot, 2015 (24)
- Genus Xenobennettella Witkowski & Riaux-Gobin in Witkowski et al., 2022 (1)
- Family Cocconeidaceae Kützing, 1844 (83)
- Order Bacillariales (357)
- Order Cymbellales (792)
- Order Dictyoneidales
- Order Lyrellales (15)
- Order Mastogloiales (88)
- Order Naviculales (2 077)
- Order Rhopalodiales (37)
- Order Surirellales (174)
- Order Thalassiophysales (105)
- Superorder Bacillariophycidae incertae sedis (32)
- Superorder Eunotiophycanae (293)
- Subclass Coscinodiscophycidae (877)
- Subclass Fragilariophycidae (483)
- Order Centrales
