| Species | as Species | Doubtful |
|---|
Connected successfully| Achnanthes brevipes C.A. Agardh, 1824 | | |
| Achnanthes longipes Agardh, 1824 | | |
| Amphidinium lanceolatum Schröder, 1911 | | |
| Amphidinium ovum Herdman, 1924 | | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | ''Cerataulina bergonii''; | |
| Chaetoceros affinis Lauder, 1864 | | |
| Chaetoceros borgei Lemmermann, 1904 | | |
| Chaetoceros compressus Lauder, 1864 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros danicus P.T.Cleve, 1889 | | |
| Chaetoceros densus P.T. Cleve, 1901 | | |
| Chaetoceros dubius Pr.-Lavrenko | | |
| Chaetoceros lauderi Ralfs in Lauder, 1864 | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros muelleri Lemmermann, 1898 | | |
| Chaetoceros neogracilis VanLand., 1968 | ''Chaetoceros gracilis''; | |
| Chaetoceros simplex Ostenfeld, 1901 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chaetoceros subtilis (Proschkina-Lavrenko) Proschkina-Lavrenko, 1961 | | |
| Chromulina stellata Pascher | | |
| Cocconeis scutellum (Grunow in Van Heurck) P.T. Cleve, 1896 | | |
| Coscinodiscus granii Gough, 1905 | | |
| Coscinodiscus jonesianus (Greville) Ostenfeld, 1915 | | |
| Crucigenia tetrapedia (Kirchner) W. & G.S. West, 1902 | | |
| Cyclotella caspia Grunow, 1878 | | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | ''Rhizosolenia fragillissima''; | |
| Dinophysis ovum Schütt, 1895 | | |
| Fallacia pygmaea (Kützing) Stickle & Mann in Round et al., 1990 | ''Navicula minutula''; | |
| Glenodinium pilula (Ostenfeld) Schiller | | |
| Gonyaulax cochlea Meunier, 1919 | | |
| Gonyaulax minima Matzenauer, 1933 | | |
| Gonyaulax scrippsae Kofoid, 1911 | | |
| Grammatophora marina (Lyngbye) Kützing, 1844 | | |
| Grammatophora oceanica Ehrenberg, 1841 | | |
| Gymnodinium agiliforme Schiller, 1928 | | |
| Gymnodinium najadeum Schiller, 1928 | | |
| Gymnodinium punctatum Pouchet, 1887 | | |
| Gymnodinium rhomboides Schütt, 1895 | | |
| Gymnodinium wulffii Schiller, 1933 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | ''Peridinium triquetrum''; | |
| Hyalodiscus scoticus (Kützing) Grunow, 1879 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Licmophora ehrenbergii (Kützing) Grunow, 1867 | | |
| Licmophora gracilis (Ehrenberg) Grunow, 1867 | | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | ''Gonyaulax polyedra''; | |
| Melosira interrupta K.E.Lohman & G.W.Andrews | | |
| Melosira lineata (Dillwyn) C.A. Agardh, 1824 | ''Melosira juergensi''; | |
| Melosira moniliformis (O.F. Müller) C. Agardh, 1824 | | |
| Navicula cancellata Donkin, 1872 | | |
| Navicula pennata A. Schmidt, 1876 | | |
| Navicula pennata var. pontica Mer. | | |
| Neoceratium tripos (O.F.Müller) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium tripos''; | |
| Nitzschia holsatica Hust | | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Oblea rotunda (Lebour, 1922) Balech, 1964 ex Sournia, 1973 | | |
| Ochromonas mutablis Klebs | | |
| Oocystis borgei J. Snow, 1903 | | |
| Oocystis lacustris Chodat, 1897 | | |
| Oocystis solitaria Wittrock in Wittrock & Nordstedt, 1879 | | |
| Oxyrrhis marina Dujardin, 1841 | | |
| Paralia sulcata (Ehrenberg) P.T. Cleve, 1873 | ''Melosira sulcata''; | |
| Peridinium bipes Stein | | |
| Peridinium breve Paulsen | | |
| Proboscia alata (Brightwell) Sundström, 1986 | ''Rhizosolenia alata''; | |
| Prorocentrum compressum (Bailey, 1850) Abé ex Dodge, 1975 | also ''Exuviaella compressa''; | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | | |
| Prorocentrum lima (Ehrenberg, 1860) Stein, 1975 | ''Prorocentrum marinum''; | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Prorocentrum nanum Schiller, 1918 | ''Prorocentrum pusillum''; | |
| Prorocentrum perforatum Gran, 1915 | | |
| Prorocentrum scutellum Schröder, 1900 | | |
| Prorocentrum vaginula (Stein, 1883) Dodge 1975 | | |
| Protoceratium reticulatum (Claparède et Lachmann, 1859) Bütschli, 1885 | | |
| Protoperidinium abei (Paulsen, 1930) Balech, 1974 | | |
| Protoperidinium achromaticum (Levander, 1902) Balech, 1974 | ''Peridinium achromaticum''; | |
| Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 | ''Peridinium brevipes''; | |
| Protoperidinium decipiens (Jørgensen, 1899) Parke et Dodge, 1976 | ''Peridinium decipiens''; | |
| Protoperidinium elegans (Cleve, 1900) Balech, 1974 | ''Peridinium elegans''; | |
| Protoperidinium excentricum (Paulsen, 1907) Balech, 1974 | ''Peridinium excentricum''; | |
| Protoperidinium pellucidum Bergh, 1882 | ''Peridinium pellucidum''; | |
| Protoperidinium solidicorne (Mangin, 1922) Balech, 1974 | ''Peridinium solidicorne''; | |
| Protoperidinium subinerme (Paulsen, 1904) Loeblich III, 1970 | ''Peridinium subinerme''; | |
| Pseudo-nitzschia delicatissima (P.T. Cleve, 1897) Heiden, 1928 | ''Nitzschia delicatissima''; | |
| Pseudo-nitzschia seriata (P.T. Cleve, 1883) H. & M. Peragallo, 1900 | ''Nitzschia seriata''; | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | ''Rhizosolenia calcar-avis''; | |
| Rhopalodia musculus (Kützing) O.F. Müller, 1900 | | |
| Scrippsiella trochoidea (Stein, 1883) Balech ex Loeblich III, 1965 | ''Peridinium trochoideum''; | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Striatella delicatula (Kützing) Grunow ex Van Heurck, 1881 | | |
| Synedra curvata Pr. Lavrenko | | |
| Tabularia fasciculata (C. Agardh) D.M. Williams & Round, 1986 | ''Synedra tabulata'' and ''Synedra tabulata var. fasciculata''; | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira eccentrica (Ehrenberg) P.T. Cleve, 1903-1904 | | |
| Thalassiosira parva Proshk.-Lavr., 1955 | | |