Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (additional source)
Alexandrium fundyense Balech, 1985 accepted as Alexandrium catenella (Whedon & Kofoid) Balech, 1985 (additional source)
Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985 (additional source)
Asterionellopsis glacialis (Castracane) Round, 1990 accepted as Asterionella glacialis Castracane, 1886 (additional source)
Bacillaria paxillifer (O.F.Müller) T.Marsson, 1901 accepted as Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 (additional source)
Biddulphia alternans (Bailey) Van Heurck, 1885 accepted as Trigonium alternans (Bailey) A.Mann, 1907 accepted as Triceratium alternans f. alternans J.W. Bailey, 1851 (additional source)
Cerataulina pelagica (Cleve) Hendey, 1937 accepted as Cerataulina bergonii Ostenfeld, 1903 (additional source)
Ceratium fusus (Ehrenberg) Dujardin, 1841 accepted as Tripos fusus (Ehrenberg) F.Gómez, 2013 (additional source)
Ceratium horridum (Cleve) Gran, 1902 accepted as Tripos horridus (Cleve) F.Gómez, 2013 (additional source)
Ceratium kofoidii Jørgensen, 1911 accepted as Tripos kofoidii (E.G.Jørgensen) F.Gómez, 2013 (additional source)
Ceratium lineatum (Ehrenberg) Cleve, 1899 accepted as Tripos lineatus (Ehrenberg) F.Gómez, 2013 (additional source)
Ceratium longipes (Bailey) Gran, 1902 accepted as Tripos longipes (Bailey) F.Gómez, 2013 (additional source)
Ceratium minutum Jörgensen, 1920 accepted as Tripos minutus (E.G.Jørgensen) F.Gómez, 2013 (additional source)
Chaetoceros affinis Lauder, 1864 (additional source)
Chaetoceros atlanticus Cleve, 1873 (additional source)
Chaetoceros borealis Bailey, 1854 (additional source)
Chaetoceros brevis F.Schütt, 1895 (additional source)
Chaetoceros compressus Lauder, 1864 (additional source)
Chaetoceros concavicornis Mangin, 1917 (additional source)
Chaetoceros constrictus Gran, 1897 (additional source)
Chaetoceros convolutus Castracane, 1886 (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 diadema (Ehrenberg) Gran, 1897 accepted as Syndendrium diadema Ehrenberg, 1854 † (additional source)
Chaetoceros didymus Ehrenberg, 1845 (additional source)
Chaetoceros furcellatus Yendo, 1911 (additional source)
Chaetoceros laciniosus F.Schütt, 1895 (additional source)
Chaetoceros lorenzianus Grunow, 1863 (additional source)
Chaetoceros perpusillus Cleve, 1897 (basis of record)
Chaetoceros similis Cleve, 1896 (additional source)
Chaetoceros simplex Ostenfeld, 1902 (additional source)
Chaetoceros socialis H.S.Lauder, 1864 (additional source)
Chaetoceros tenuissimus Meunier, 1913 (basis of record)
Chaetoceros teres Cleve, 1896 (additional source)
Cylindrotheca closterium (Ehrenberg) Reimann & J.C.Lewin, 1964 (additional source)
Dactyliosolen fragilissimus (Bergon) Hasle, 1996 accepted as Rhizosolenia fragilissima f. fragilissima Bergon, 1903 (additional source)
Detonula pumila (Castracane) Gran, 1900 accepted as Lauderia pumila Castracane, 1886 (additional source)
Dictyocha speculum Ehrenberg, 1839 accepted as Octactis speculum (Ehrenberg) F.H.Chang, J.M.Grieve & J.E.Sutherland, 2017 (basis of record)
Dinophysis acuminata Claparède & Lachmann, 1859 (additional source)
Dinophysis acuta Ehrenberg, 1839 (additional source)
Dinophysis norvegica Claparède & Lachmann, 1859 (additional source)
Dinophysis pulchella (Lebour) Balech, 1967 (additional source)
Ditylum brightwellii (T.West) Grunow, 1885 (additional source)
Eucampia zodiacus Ehrenberg, 1839 (additional source)
Gonyaulax digitale (Pouchet) Kofoid, 1911 (additional source)
Gonyaulax spinifera (Claparède & Lachmann) Diesing, 1866 (additional source)
Guinardia delicatula (Cleve) Hasle, 1997 accepted as Rhizosolenia delicatula Cleve, 1900 (additional source)
Guinardia flaccida (Castracane) H.Peragallo, 1892 accepted as Rhizosolenia flaccida Castracane, 1886 (additional source)
Guinardia striata (Stolterfoth) Hasle, 1996 accepted as Eucampia striata Stolterfoth, 1879 (additional source)
Gyrosigma fasciola (Ehrenberg) J.W.Griffith & Henfrey, 1856 accepted as Ceratoneis fasciola Ehrenberg, 1839 (additional source)
Gyrosigma tenuissimum (W.Smith) Griffith & Henfrey, 1856 accepted as Pleurosigma tenuissimum var. tenuissimum W. Smith, 1853 (basis of record)
Helicotheca tamesis (Shrubsole) M.Ricard, 1987 (basis of record)
Heterocapsa triquetra (Ehrenberg) F.Stein, 1883 accepted as Kryptoperidinium triquetrum (Ehrenberg) U.Tillmann, M. Gottschling, M.Elbrächter, W.-H.Kusber & M.Hoppenrath, 2019 (additional source)
Lauderia annulata Cleve, 1873 (additional source)
Leptocylindrus mediterraneus (H.Peragallo) Hasle, 1975 accepted as Lauderia mediterranea H.Peragallo, 1888 (additional source)
Leptocylindrus minimus Gran, 1915 (additional source)
Licmophora flabellata (Grev.)C.Agardh, 1831 (basis of record)
Lithodesmium undulatum Ehrenberg, 1839 (additional source)
Melosira monoliformis (O.F. Müller) C. Agardh, 1824 accepted as Melosira moniliformis (O.F.Müller) C.Agardh, 1824 (additional source)
Minuscula bipes (Paulsen) Lebour, 1925 accepted as Protoperidinium bipes (Paulsen, 1904) Balech, 1974 (additional source)
Odontella aurita (Lyngbye) C.Agardh, 1832 (additional source)
Odontella obtusa Kützing, 1844 (additional source)
Odontella regia (Schultze) Simonsen, 1974 (additional source)
Paralia marina (W.Smith) Heiberg, 1863 accepted as Orthosira marina W. Smith, 1856 (basis of record)
Phalacroma rotundatum (Claparéde & Lachmann) Kofoid & J.R.Michener, 1911 (additional source)
Pleurosigma angulatum (Queckett) W.Smith, 1852 (additional source)
Porosira glacialis (Grunow) Jörgensen, 1905 (basis of record)
Proboscia alata (Brightwell) Sundström, 1986 (additional source)
Prorocentrum micans Ehrenberg, 1834 (additional source)
Protoperidinium denticulatum (Gran & Braarud, 1935) Balech, 1974 (additional source)
Protoperidinium depressum (Bailey, 1854) Balech, 1974 (additional source)
Protoperidinium divergens (Ehrenberg) Balech, 1974 (additional source)
Rhizosolenia hebetata Bailey, 1856 (additional source)
Rhizosolenia imbricata Brightwell, 1858 (additional source)
Rhizosolenia pungens Cleve-Euler, 1937 represented as Sundstroemia pungens (Cl.-Euler) Medlin, Lundholm, Boonprakob, Moestrup in Medlin et al., 2021 (additional source)
Rhizosolenia setigera Brightwell, 1858 represented as Sundstroemia setigera (Brightwell) Medlin in Medlin et al., 2021 (additional source)
Scrippsiella trochoidea (F.Stein) A.R.Loeblich III, 1976 accepted as Scrippsiella acuminata (Ehrenberg) Kretschmann, Elbrächter, Zinssmeister, S.Soehner, Kirsch, Kusber & Gottschling, 2015 (additional source)
Skeletonema costatum (Greville) Cleve, 1873 (additional source)
Stephanopyxis turris (Greville) Ralfs, 1861 (additional source)
Striatella unipunctata (Lyngbye) C.Agardh, 1832 accepted as Fragilaria unipunctata Lyngbye, 1819 (additional source)
Thalassionema nitzschioides (Grunow) Mereschkowsky, 1902 (additional source)
Thalassiosira angulata (W.Gregory) Hasle, 1978 accepted as Orthosira angulata Gregory, 1857 (additional source)
Thalassiosira anguste-lineata (A.Schmidt) G.Fryxell & Hasle, 1977 accepted as Coscinodiscus angustelineatus Schmidt in Schmidt et al., 1878 (additional source)
Thalassiosira baltica (Grunow) Ostenfeld, 1901 (basis of record)
Thalassiosira decipiens (Grunow) E.G.Jørgensen, 1905 (additional source)
Thalassiosira gravida Cleve, 1896 (additional source)
Thalassiosira nordenskioeldii Cleve, 1873 (additional source)
Thalassiosira oestrupii (Ostenfeld) Hasle, 1972 represented as Shionodiscus oestrupii (Ostenfeld) A.J.Alverson, S.H.Kang & E.C.Theriot, 2006 (basis of record)
Thalassiosira rotula Meunier, 1910 accepted as Thalassiosira gravida Cleve, 1896 (additional source)