| Species | as Species | Doubtful |
|---|
Connected successfully| Achnanthes longipes Agardh, 1824 | | |
| Akashiwo sanguinea (K.Hirasaka) G.Hansen & Ø.Moestrup | ''Gymnodinium sanguineum''; | |
| Asterionellopsis glacialis (Castracane) Round in Round et al., 1990 | ''Asterionella japonica''; | |
| Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 | ''Bacillaria paradoxa''; ''Nitzschia paradoxa''; | |
| Bacteriastrum delicatulum Cleve, 1897 | | |
| Bacteriastrum hyalinum Lauder, 1864 | | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | | |
| Ceratium carriense var. volans (Cleve) Joerg. | | |
| Ceratium fusus var. seta (Ehrenberg) Sournia, 1966 | | |
| Chaetoceros affinis Lauder, 1864 | | |
| Chaetoceros breve Schütt, 1895 | | |
| Chaetoceros compressus Lauder, 1864 | | |
| Chaetoceros constrictus Gran, 1897 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros danicus P.T.Cleve, 1889 | | |
| Chaetoceros debilis P.T. Cleve, 1894 | ''Chaetoceros debile''; | |
| Chaetoceros decipiens P.T. Cleve, 1873 | | |
| Chaetoceros diadema (Ehrenberg) Gran, 1897 | ''Chaetoceros subsecundus''; | |
| Chaetoceros holsaticus Schütt, 1895 | | |
| Chaetoceros laciniosus Schütt, 1895 | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros messanense Castracane, 1875 | | |
| Chaetoceros neogracilis VanLand., 1968 | ''Chaetoceros gracile''; | |
| Chaetoceros protuberans H.S.Lauder, 1864 | ''Chaetoceros didymus var. protuberans''; | |
| Chaetoceros pseudocurvisetus Mangin, 1910 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chaetoceros tortissimus Gran, 1900 | | |
| Chaetoceros vistulae Apstein, 1909 | | |
| Chaetoceros wighamii Brightwell, 1856 | | |
| Climacosphenia elongata Mereschkowsky | | |
| Cocconeis scutellum (Grunow in Van Heurck) P.T. Cleve, 1896 | | |
| Coscinodiscus centralis Ehrenberg, 1844 | | |
| Coscinodiscus concinnus W. Smith, 1856 | | |
| Coscinodiscus granii Gough, 1905 | | |
| Coscinodiscus marginatus Ehrenberg, 1841 (1843, 1844) | | |
| Coscinodiscus perforatus var. pavillardii (Forti) Hust., 1928 | | |
| Coscinodiscus radiatus Ehrenberg, 1841 | | |
| Cylindrotheca closterium (Ehrenberg) Reiman & Lewin, 1964 | | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | ''Rhizosolenia fragillissima''; | |
| Dictyocha fibula var. messanensis (E.H.P.A.Haeckel) Lemmermann | | |
| Dictyocha fibula var. pentagona P.Schulz-Danzig | | |
| Dictyocha polyactis Ehrenberg | | |
| Dictyocha speculum Ehrenberg | | |
| Dinophysis acuminata Claparède & Lachmann, 1859 | | |
| Dinophysis acuta Ehrenberg, 1841 | | |
| Dinophysis caudata Saville-Kent, 1881 | also ''Dinophysis diegensis''; | |
| Dinophysis fortii Pavillard, 1923 | | |
| Dinophysis hastata Stein, 1883 | | |
| Dinophysis infundibulus Schiller, 1928 | | |
| Dinophysis parvula (Schütt) Balech | | |
| Dinophysis punctata Jörgensen, 1923 | | |
| Dinophysis sacculus Stein, 1883 | | |
| Diploneis crabro Ehrenberg, 1844 | ''Navicula crabro''; | |
| Diplopsalis lenticula Bergh, 1881 | | |
| Ditylum brightwellii (T. West) Grunow in Van Heurck, 1883 | | |
| Emiliania huxleyi (Lohmann) Hay & Mohler, 1967 | | |
| Gonyaulax birostris Stein, 1883 | | |
| Gonyaulax diegensis Kofoid, 1911 | | |
| Gonyaulax monacantha Pavillard, 1916 | | |
| Gonyaulax polygramma Stein, 1883 | | |
| Gonyaulax spinifera (Claparède & Lachmann, 1859) Diesing, 1866 | | |
| Gonyaulax verior Sournia, 1973 | ''Gonyaulax diacantha''; | |
| Grammatophora marina (Lyngbye) Kützing, 1844 | | |
| Guinardia delicatula (Cleve) G.R. Hasle, 1996 | ''Rhizosolenia delicatula''; | |
| Guinardia flaccida (Castracane) Peragallo, 1892 | | |
| Guinardia striata (Stoltherfoth) Hasle, 1997 | ''Rhizosolenia stolterfothii''; | |
| Gyrosigma spenceri (J.W. Bailey ex Quekett) Griffith & Henfrey, 1856 | | |
| Hemiaulus hauckii Grunow in Van Heurck, 1882 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Licmophora abbreviata C.A. Agardh, 1831 | | |
| Licmophora flabellata C. Agardh, 1830 | | |
| Licmophora gracilis (Ehrenberg) Grunow, 1867 | | |
| Licmophora paradoxa (Lyngbye) C.A. Agardh, 1828 | | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | ''Gonyaulax polyedra''; | |
| Melosira borreri Greville, 1833 | | |
| Navicula lanceolata (C.A. Agardh) Ehrenberg, 1838 | | |
| Navicula pennata A. Schmidt, 1876 | | |
| Navicula zostereti Grunow, 1860 | | |
| Neoceratium belone (Cleve) F.Gómez, D.Moreira & P.López-Garcia, 2001 | ''Ceratium belone''; | |
| Neoceratium compressum (Gran) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium compressum''; | |
| Neoceratium declinatum f. majus (Jörg.) Krachmalny, 2011 | ''Ceratium declinatum f. majus''; | |
| Neoceratium declinatum f. normale (Jørg.) Krachmalny, 2011 | ''Ceratium declinatum f. normale''; | |
| Neoceratium extensum (Gourret) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium biceps'', ''Ceratium strictum''; | |
| Neoceratium furca (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium furca var. furca''; | |
| Neoceratium furca var. eugrammum (Ehrenb.) Krachmalny, 2011 | ''Ceratium furca var. eugrammum''; | |
| Neoceratium fusus (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium fusus var. fusus''; | |
| Neoceratium horridum (Gran) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium horridum var. denticulatum'' and ''Ceratium horridum var. horridum''; | |
| Neoceratium incisum (Karsten) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium incisum''; | |
| Neoceratium inflatum (Kofoid) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium inflatum''; | |
| Neoceratium kofoidii (Jørgensen) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium kofoidii''; | |
| Neoceratium lineatum (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium lineatum''; | |
| Neoceratium longirostrum (Gourret) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium longirostrum''; | |
| Neoceratium massiliense var. armatum (Karst.) Krachmalny, 2011 | ''Ceratium massiliense var. armatum''; | |
| Neoceratium pulchellum (Schröder) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium tripos var. puchellum''; | |
| Neoceratium teres (Kofoid) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium teres''; | |
| Neoceratium tripos var. atlanticum (Ostenf.) Krachmalny, 2011 | ''Ceratium tripos var. atlanticum''; | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Nitzschia sigma (Kützing) W. Smith, 1853 | | |
| Noctiluca scintillans (Macartney, 1810) Kofoid, 1920 | | |
| Octactis octonaria (Ehrenberg) Hovasse, 1946 | | |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | ''Dinophysis rotundata'' and ''Dinophysis rudgei''; | |
| Pleurosigma angulatum (Quekett, 1848) Wm. Smith, 1853 | | |
| Proboscia alata (Brightwell) Sundström, 1986 | ''Rhizosolenia alata f. gracillima''; | |
| Prorocentrum aporum (Schiller, 1918) Dodge, 1975 | | |
| Prorocentrum balticum (Lohmann, 1908) Loeblich, 1970 | | |
| Prorocentrum compressum (Bailey, 1850) Abé ex Dodge, 1975 | | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | | |
| Prorocentrum dentatum Stein, 1883 | | |
| Prorocentrum maximum (Gourret, 1883) Schiller, 1937 | | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Prorocentrum pyriforme (Schiller) Taylor | | |
| Prorocentrum rotundatum Schiller, 1928 | | |
| Prorocentrum scutellum Schröder, 1900 | | |
| Prorocentrum triestinum Schiller, 1918 | | |
| Protoceratium areolatum Kofoid, 1907 | | |
| Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 | | |
| Protoperidinium brochii (Kofoid & Swezy) Balech | | |
| Protoperidinium claudicans (Paulsen, 1907) Balech, 1974 | | |
| Protoperidinium conicoides (Paulsen, 1905) Balech, 1973 | | |
| Protoperidinium depressum (Bailey, 1850) Balech, 1974 | | |
| Protoperidinium diabolum (Cleve) Balech, 1974 | ''Protoperidinium diabolus''; | |
| Protoperidinium divergens (Ehrenberg, 1841) Balech, 1974 | | |
| Protoperidinium globulus (Stein, 1883) Balech, 1974 | | |
| Protoperidinium grande (Kofoid, 1907) Balech, 1974 | | |
| Protoperidinium granii (Ostenfield, 1906) Balech, 1974 | | |
| Protoperidinium longipes Balech, 1974 | | |
| Protoperidinium pellucidum Bergh, 1882 | | |
| Protoperidinium pentagonum (Gran, 1902) Balech, 1974 | | |
| Protoperidinium punctulatum (Paulsen, 1908) Balech, 1974 | | |
| Protoperidinium pyriforme (Paulsen, 1907) Balech, 1974 | | |
| Protoperidinium steinii (Jörgensen, 1899) Balech, 1974 | | |
| Protoperidinium subinerme (Paulsen, 1904) Loeblich III, 1970 | | |
| Pseudo-nitzschia delicatissima (P.T. Cleve, 1897) Heiden, 1928 | | |
| Pseudo-nitzschia pseudodelicatissima (Hasle) Hasle, 1993 | | |
| Pseudo-nitzschia pungens (Grunow ex P.T. Cleve, 1897) Hasle, 1993 | | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | ''Rhizosolenia calcar-avis''; | |
| Pyrocystis elegans Pavillard, 1931 | | |
| Pyrophacus horologicum Stein, 1883 | | |
| Rhabdonema adriaticum Kützing, 1844 | | |
| Rhizosolenia imbricata Brightwell, 1858 | ''Rhizosolenia shrubsolei''; | |
| Rhizosolenia setigera Brightwell, 1858 | | |
| Scrippsiella trochoidea (Stein, 1883) Balech ex Loeblich III, 1965 | | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Stephanopyxis palmeriana (Greville) Grunow | | |
| Stephanopyxis turris (Greville) Ralfs ex Pritchard, 1861 | | |
| Striatella delicatula (Kützing) Grunow ex Van Heurck, 1881 | | |
| Striatella interrupta (Ehrenb.) Grunow., 1862 | | |
| Striatella unipunctata (Lyngb.) Ag. | | |
| Thalassionema frauenfeldii (Grunow) Hallegraeff, 1986 | | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira allenii Takano, 1965 | | |
| Thalassiosira angulata (Gregory) Hasle, 1978 | ''Thalassiosira decipiens''; | |
| Thalassiosira anguste-lineata (A. Schmidt) Fryxell et Hasle, 1977 | | |
| Thalassiosira eccentrica (Ehrenberg) P.T. Cleve, 1903-1904 | | |
| Thalassiosira gravida P.T. Cleve, 1896 | | |
| Thalassiosira leptopus (Grunow In Van Heurck) Fryxell et Hasle, 1977 | ''Coscinodiscus lineatus''; | |
| Thalassiosira nordenskioeldii P.T. Cleve, 1873 | | |
| Thalassiosira rotula Meunier, 1910 | | |
| Thalassiosira subtilis (Ostenfeld) Gran, 1900 | | |
| Thalassiothrix longissima P.T. Cleve & Grunow, 1880 | | |
| Thalassiothrix mediterranea Pavillard | | |
| Toxarium undulatum J.W. Bailey, 1854 | ''Synedra undulata''; | |