Actinocyclus C.G. Ehrenberg, 1837 (additional source)
Actinocyclus normanii (Gregory) Hustedt, 1957 (additional source)
Actinocyclus octonarius Ehrenberg, 1837 accepted as Actinoptychus octonarius (Ehrenberg) Kützing, 1844 accepted as Actinocyclus octonarius var. octonarius Ehrenberg, 1837 (additional source)
Actinocyclus octonarius var. octonarius Ehrenberg, 1837 (basis of record)
Actinocyclus senarius Ehrenberg, 1838 (basis of record)
Actinocyclus senarius Ehrenberg, 1838 (source of synonymy)
Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (additional source)
Actinoptychus splendens (Shadbolt) Ralfs ex Pritchard, 1861 (additional source)
Asterionella A.H. Hassall, 1850 (additional source)
Asterionella formosa Hassall, 1850 (additional source)
Asterionella frauenfeldii Grunow, 1863 represented as Thalassionema frauenfeldii (Grunow) Tempère & Peragallo, 1910 (basis of record)
Asterionella frauenfeldii Grunow, 1863 represented as Thalassionema frauenfeldii (Grunow) Tempère & Peragallo, 1910 (source of synonymy)
Asterionella glacialis Castracane, 1886 (source of synonymy)
Asterionella kariana Grunow, 1880 (source of synonymy)
Asterionellopsis F.E. Round in F.E. Round, R.M. Crawford & D.G. Mann, 1990 (additional source)
Asterionellopsis glacialis (Castracane) Round, 1990 accepted as Asterionella glacialis Castracane, 1886 (additional source)
Aulacodiscus argus (Ehrenberg) A.Schmidt, 1886 accepted as Tripodiscus argus Ehrenberg, 1839 (additional source)
Aulacoseira granulata (Ehrenberg) Simonsen, 1979 (additional source)
Auliscus C.G. Ehrenberg, 1843 (additional source)
Auliscus sculptus (W.Smith) Brightwell, 1860 accepted as Eupodiscus sculptus W.Smith, 1853 (additional source)
Azpeitia M. Peragallo in J. Tempère & H. Peragallo, 1912 (additional source)
Azpeitia nodulifera (A.W.F.Schmidt) G.A.Fryxell & P.A.Sims, 1986 (additional source)
Bacillaria J.F. Gmelin, 1788 (additional source)
Bacillaria ulna Nitzsch, 1817 (basis of record)
Bacteriastrum G. Shadbolt, 1854 (additional source)
Bacteriastrum hyalinum Lauder, 1864 (basis of record)
Bellerochea H. Van Heurck, 1885 (additional source)
Biddulphia S.F. Gray, 1821 (additional source)
Biddulphia sinensis Greville, 1866 (source of synonymy)
Biddulphia subaequa (Kützing) J.Ralfs, 1861 (basis of record)
Cerataulina H. Peragallo ex F. Schütt in Engler & Prantl, 1896 (additional source)
Cerataulina pelagica (Cleve) Hendey, 1937 accepted as Cerataulina bergonii Ostenfeld, 1903 (additional source)
Cerataulus Ehrenberg, 1844 (additional source)
Ceratoneis closterium Ehrenberg, 1839 (basis of record)
Ceratoneis closterium Ehrenberg, 1839 (source of synonymy)
Ceratoneis fasciola Ehrenberg, 1839 (basis of record)
Ceratoneis fasciola Ehrenberg, 1839 (source of synonymy)
Chaetoceros C.G. Ehrenberg, 1844 (additional source)
Chaetoceros affinis Lauder, 1864 (additional source)
Chaetoceros ceratosporus Ostenfeld, 1910 (additional source)
Chaetoceros compressus Lauder, 1864 (additional source)
Chaetoceros constrictus Gran, 1897 (additional source)
Chaetoceros costatus Pavillard, 1911 (additional source)
Chaetoceros crinitus F.Schütt, 1895 (additional source)
Chaetoceros curvisetus Cleve, 1889 (additional source)
Chaetoceros danicus Cleve, 1889 (additional source)
Chaetoceros debilis Cleve, 1894 emend Xu, Y.Li & Lundholm in Xu et al., 2020 (additional source)
Chaetoceros decipiens Cleve, 1873 (additional source)
Chaetoceros densus (Cleve) Cleve, 1899 (additional source)
Chaetoceros diadema (Ehrenberg) Gran, 1897 accepted as Syndendrium diadema Ehrenberg, 1854 † (additional source)
Chaetoceros didymus Ehrenberg, 1845 (additional source)
Chaetoceros eibenii Grunow, 1882 (additional source)
Chaetoceros lauderi Ralfs, 1864 (additional source)
Chaetoceros lorenzianus Grunow, 1863 (additional source)
Chaetoceros mitra (Bailey) Cleve, 1896 accepted as Dicladia mitra J.W.Bailey, 1856 † (additional source)
Chaetoceros muelleri Lemmermann, 1898 (basis of record)
Chaetoceros similis Cleve, 1896 (additional source)
Chaetoceros simplex Ostenfeld, 1902 (additional source)
Chaetoceros socialis H.S.Lauder, 1864 (additional source)
Chaetoceros subtilis Cleve, 1896 (additional source)
Chaetoceros teres Cleve, 1896 (additional source)
Chaetoceros tortissimus Gran, 1900 (basis of record)
Cocconeis C.G. Ehrenberg, 1837 (additional source)
Cocconeis placentula Ehrenberg, 1838 (additional source)
Corethron A.F. Castracane, 1886 (additional source)
Corethron criophilum Castracane, 1886 (additional source)
Coscinodiscus C.G. Ehrenberg, 1839 (additional source)
Coscinodiscus centralis Ehrenberg, 1844 (additional source)
Coscinodiscus commutatus Grunow, 1884 (additional source)
Coscinodiscus concinnus W.Smith, 1856 (additional source)
Coscinodiscus granii Gough, 1905 (additional source)
Coscinodiscus jonesianus (Greville) Ostenfeld, 1915 accepted as Coscinodiscopsis jonesiana (Greville) E.A.Sar & I.Sunesen, 2008 accepted as Eupodiscus jonesianus Greville, 1862 (basis of record)
Coscinodiscus lacustris Grunow (basis of record)
Coscinodiscus lacustris Grunow (source of synonymy)
Coscinodiscus nodulifer A.W.F.Schmidt, 1878 represented as Azpeitia nodulifera (A.W.F.Schmidt) G.A.Fryxell & P.A.Sims, 1986 (additional source)
Coscinodiscus perforatus Ehrenberg, 1844 (additional source)
Coscinodiscus radiatus Ehrenberg, 1840 (additional source)
Coscinodiscus rothii (Ehrenberg) Grunow (basis of record)
Coscinodiscus wailesii Gran & Angst, 1931 (additional source)
Cyclostephanos F.E. Round ex Theriot, Hakansson, Kociolek, Round & Stoermer, 1987 (additional source)
Cyclostephanos dubius (Hustedt) Round, 1988 accepted as Cyclotella dubia var. dubia Fricke in Schmidt et al., 1900 (additional source)
Cyclotella (F.T. Kützing) A. de Brébisson, 1838 (additional source)
Cyclotella atomus Hustedt, 1937 (additional source)
Cyclotella choctawhatcheeana Prasad, 1990 (additional source)
Cyclotella comta (Ehrenberg) Kützing, 1849 (source of synonymy)
Cyclotella dubia Fricke, 1900 accepted as Cyclostephanos dubius (Hustedt) Round, 1988 accepted as Cyclotella dubia var. dubia Fricke in Schmidt et al., 1900 (basis of record)
Cyclotella dubia Fricke, 1900 accepted as Cyclostephanos dubius (Hustedt) Round, 1988 accepted as Cyclotella dubia var. dubia Fricke in Schmidt et al., 1900 (source of synonymy)
Cyclotella meneghiniana Kützing, 1844 (additional source)
Cyclotella radiosa (Grunow) Lemmermann, 1900 accepted as Cyclotella comta var. radiosa Grunow in Van Heurck, 1882 (additional source)
Cyclotella striata (Kützing) Grunow, 1880 (additional source)
Cylindrotheca L. Rabenhorst, 1859 (additional source)
Cylindrotheca closterium (Ehrenberg) Reimann & J.C.Lewin, 1964 (additional source)
Cylindrotheca gracilis (Brébisson ex Kützing) Grunow, 1882 (additional source)
Cymatopleura W. Smith, 1851 (additional source)
Cymatopleura solea (Brébisson) W.Smith, 1851 (additional source)
Dactyliosolen A.F. Castracane, 1886 (additional source)
Dactyliosolen fragilissimus (Bergon) Hasle, 1996 accepted as Rhizosolenia fragilissima f. fragilissima Bergon, 1903 (additional source)
Denticella C.G. Ehrenberg, 1838 (basis of record)
Denticella turgida Ehrenberg, 1840 (source of synonymy)
Detonula F. Schütt ex G.B. De Toni, 1894 (additional source)