| Species | as Species | Doubtful |
|---|
Connected successfully| Achnanthes brevipes C.A. Agardh, 1824 | | |
| Achnanthes longipes Agardh, 1824 | | |
| Akashiwo sanguinea (K.Hirasaka) G.Hansen & Ø.Moestrup | | |
| Alexandrium minutum Halim, 1960 | | |
| Amylax triacantha (Jörgensen, 1899) Sournia, 1984 | | |
| Asterionellopsis glacialis (Castracane) Round in Round et al., 1990 | | |
| Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 | ''Bacillaria paradoxa''; | |
| Bicosoeca mediterranea Pavillard, 1916 | | |
| Campylodiscus decorus de Brébisson, 1854 | | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | | |
| Ceratium hirundinella (O.F. Müller) Dujardin, 1841 | | |
| Chaetoceros affinis Lauder, 1864 | | |
| Chaetoceros anastomosans Grunow | | |
| Chaetoceros atlanticus P.T. Cleve, 1873 | | |
| Chaetoceros compressus Lauder, 1864 | | |
| Chaetoceros constrictus Gran, 1897 | | |
| Chaetoceros costatus Pavillard, 1911 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros danicus P.T.Cleve, 1889 | | |
| Chaetoceros debilis P.T. Cleve, 1894 | | |
| Chaetoceros decipiens P.T. Cleve, 1873 | | |
| Chaetoceros diadema (Ehrenberg) Gran, 1897 | | |
| Chaetoceros didymus Ehrenberg, 1845 | | |
| Chaetoceros diversus Cleve, 1873 | | |
| Chaetoceros lauderi Ralfs in Lauder, 1864 | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros neogracilis VanLand., 1968 | | |
| Chaetoceros peruvianus Brightw. | | |
| Chaetoceros pseudocurvisetus Mangin, 1910 | | |
| Chaetoceros similis P.T. Cleve, 1896 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chaetoceros teres P.T. Cleve, 1896 | | |
| Chaetoceros tortissimus Gran, 1900 | | |
| Chaetoceros wighamii Brightwell, 1856 | also ''Chaetoceros perpusillus''; | |
| Cocconeis scutellum (Grunow in Van Heurck) P.T. Cleve, 1896 | | |
| Coscinodiscus centralis Ehrenberg, 1844 | | |
| Coscinodiscus concinnus W. Smith, 1856 | | |
| Coscinodiscus perforatus var. pavillardii (Forti) Hust., 1928 | | |
| Coscinodiscus radiatus Ehrenberg, 1841 | | |
| Cyclotella meneghiniana Kützing, 1844 | | |
| Cylindrotheca closterium (Ehrenberg) Reiman & Lewin, 1964 | ''Ceratoneis closterium''; | |
| Cymbella cymbiformis C.A. Agardh, 1830 | | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | | |
| Diatoma vulgare Bory de Saint-Vincent, 1824 | | |
| Dictyocha fibula Ehrenberg | | |
| Dictyocha speculum Ehrenberg | | |
| Dinobryon balticum (Schütt) Lemmermann, 1900 | | |
| Dinophysis acuminata Claparède & Lachmann, 1859 | | |
| Dinophysis caudata Saville-Kent, 1881 | | |
| Diplopsalis lenticula Bergh, 1881 | | |
| Ditylum brightwellii (T. West) Grunow in Van Heurck, 1883 | | |
| Emiliania huxleyi (Lohmann) Hay & Mohler, 1967 | | |
| Eucampia zodiacus Ehrenberg, 1840 | | |
| Eutreptia lanowii Steuer, 1904 | | |
| Fragilaria crotonensis Kitton, 1869 | | |
| Gonyaulax digitale (Pouchet, 1883) Kofoid, 1911 | | |
| Gonyaulax polygramma Stein, 1883 | | |
| Gonyaulax scrippsae Kofoid, 1911 | | |
| Grammatophora marina (Lyngbye) Kützing, 1844 | | |
| Guinardia delicatula (Cleve) G.R. Hasle, 1996 | | |
| Gymnodinium simplex (Lohmann, 1911) Koifoid & Swezy, 1921 | | |
| Gyrosigma spenceri (J.W. Bailey ex Quekett) Griffith & Henfrey, 1856 | | |
| Halosphaera viridis Schmitz | | |
| Hantzschia amphioxys (Ehrenberg) Grunow in Cleve & Grunow, 1880 | | |
| Hemiaulus hauckii Grunow in Van Heurck, 1882 | | |
| Hemiaulus sinensis Greville, 1865 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | | |
| Kofoidinium velleloides Pavillard, 1928 | | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Licmophora ehrenbergii (Kützing) Grunow, 1867 | | |
| Licmophora lyngbyei (Kützing) Grunow ex Van Heurck, 1867 | | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | | |
| Melosira moniliformis (O.F. Müller) C. Agardh, 1824 | | |
| Navicula gregaria Donkin, 1861 | | |
| Neoceratium declinatum (Karsten) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | | |
| Neoceratium furca (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium 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''; | |
| Neoceratium inflatum (Kofoid) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium inflatum''; | |
| Neoceratium tripos (O.F.Müller) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Nitzschia sicula (Castracane) Hustedt in Hallegraeff et al., 2003 | | |
| Noctiluca scintillans (Macartney, 1810) Kofoid, 1920 | | |
| Octactis octonaria (Ehrenberg) Hovasse, 1946 | | |
| Odontella mobiliensis (J.W. Bailey) Grunow, 1884 | | |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | | |
| Phormidium limosum (Dillwyn) P.C. Silva, 1996 | | |
| Pleurosigma delicatulum W. Smith, 1852 | | |
| Podolampas palmipes Stein, 1883 | | Doubtful |
| Podolampas spinifera Okamura, 1912 | | |
| Polykrikos kofoidii Chatton, 1914 | | |
| Proboscia alata (Brightwell) Sundström, 1986 | | |
| Prorocentrum balticum (Lohmann, 1908) Loeblich, 1970 | | |
| Prorocentrum compressum (Bailey, 1850) Abé ex Dodge, 1975 | | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 | | |
| Protoperidinium conicum (Gran, 1900) Balech, 1974 | | |
| Protoperidinium depressum (Bailey, 1850) Balech, 1974 | | |
| Protoperidinium divergens (Ehrenberg, 1841) Balech, 1974 | | |
| Protoperidinium globulus (Stein, 1883) Balech, 1974 | | |
| Protoperidinium granii (Ostenfield, 1906) Balech, 1974 | | |
| Protoperidinium oceanicum (VanHöffen, 1897) Balech, 1974 | | |
| Protoperidinium pallidum (Ostenfeld, 1899) Balech, 1973 | | |
| Protoperidinium pellucidum Bergh, 1882 | | |
| Protoperidinium pentagonum (Gran, 1902) Balech, 1974 | | |
| Protoperidinium steinii (Jörgensen, 1899) Balech, 1974 | | |
| 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 | | |
| Pyrocystis elegans Pavillard, 1931 | | |
| Pyrophacus horologicum Stein, 1883 | | |
| Pyrophacus steinii (Schiller, 1935) Wall & Dale, 1971 | | |
| Scrippsiella trochoidea (Stein, 1883) Balech ex Loeblich III, 1965 | | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Striatella delicatula (Kützing) Grunow ex Van Heurck, 1881 | | |
| Striatella unipunctata (Lyngb.) Ag. | | |
| Thalassionema frauenfeldii (Grunow) Hallegraeff, 1986 | | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira angulata (Gregory) Hasle, 1978 | | |
| Thalassiosira gravida P.T. Cleve, 1896 | | |
| Thalassiosira nordenskioeldii P.T. Cleve, 1873 | | |
| Thalassiosira rotula Meunier, 1910 | | |
| Thalassiosira subtilis (Ostenfeld) Gran, 1900 | | |
| Thalassiothrix mediterranea Pavillard | | |
| Trichormus variabilis (Kützing ex Bornet & Flahault) Komárek & Anagnostidis, 1989 | | |
| Ulnaria ulna (Nitzsch) P. Compère in Jahn et al., 2001 | | |