| Species | as Species | Doubtful |
|---|
Connected successfully| Acanthoica janchenii Schiller, 1925 | | |
| Acanthoica monospina Schiller, 1914 | | |
| Acanthoica quattrospina Lohman, 1903 | | |
| Achnanthes brevipes C.A. Agardh, 1824 | | |
| Achnanthes longipes Agardh, 1824 | | |
| Achradina pulchra Lohmann, 1902 | | |
| Achradina sulcata Lohmann | | |
| Actinocyclus octonarius Ehrenberg, 1838 | ''Actinocyclus ehrenbergii''; | |
| Akashiwo sanguinea (K.Hirasaka) G.Hansen & Ø.Moestrup | | |
| Amphidinium acutissimum Schiller, 1933 | | |
| Amphidinium extensum Wulff, 1916 | | |
| Amphidinium klebsii Kofoid & Swezy, 1921 | | |
| Amphidinium longum Lohmann, 1908 | | |
| Amphidinium operculatum Claparède & Lachmann, 1859 | | |
| Amphidinium sphenoides Wulff, 1916 | | |
| Amphora hyalina Kützing, 1844 | | |
| Amphora insecta Grunow ex A. Schmidt, 1876 | | |
| Anacanthoica acanthos (Schiller) Deflandre, 1952 | | |
| Apedinella radians (Lohmann) Campbell, 1973 | ''Apedinella spinifera''; | |
| Aphanizomenon flos-aquae (Linnaeus) Ralfs ex Bornet & Flahault, 1888 | ''Anabaena flos-aquae''; | |
| Ardissonea crystallina (C.A. Agardh) Grunow in Cleve & Grunow, 1880 | ''Synedra crystallina''; | |
| Asterionellopsis glacialis (Castracane) Round in Round et al., 1990 | | |
| Asteromphalus robustus Castracane, 1875 | | |
| Attheya septentrionalis (Østrup) Crawford in Crawford et al., 1994 | | |
| Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 | | |
| Bacteriastrum delicatulum Cleve, 1897 | | |
| Bacteriastrum hyalinum Lauder, 1864 | | |
| Calcidiscus leptoporus (Murray & Blackman, 1898) Loeblich & Tappan, 1978 | | |
| Calciosolenia granii var. cylindrothecaeformis Schill. | | |
| Calyptrosphaera incisa Schill. | | |
| Calyptrosphaera oblonga Lohman, 1902 | | |
| Calyptrosphaera sphaeroidea Schiller, 1913 | | |
| Campylodiscus fastuosus Ehrenberg, 1845 | ''Campylodiscus thuretii''; | |
| Campylodiscus thuretii var. lineolatum Pr.-Lavr., 1955 | | |
| Caneosphaera molischii (Schiller, 1925) Gaarder, 1977 | | |
| Carteria acuta | | |
| Carteria crassifilis | | |
| Carteria cylindraceae | | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | | |
| Chaetoceros abnormis Proschkina-Lavrenko, 1953 | | |
| Chaetoceros affinis Lauder, 1864 | | |
| Chaetoceros anastomosans Grunow | | |
| Chaetoceros borgei Lemmermann, 1904 | | |
| Chaetoceros calcitrans (Paulsen) Takano, 1968 | ''Chaetoceros simplex var. calcitrans''; | |
| Chaetoceros compressus Lauder, 1864 | | |
| Chaetoceros convolutus Castracane, 1886 | | |
| Chaetoceros coronatus Gran, 1897 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros danicus P.T.Cleve, 1889 | | |
| Chaetoceros densus P.T. Cleve, 1901 | | |
| Chaetoceros diadema (Ehrenberg) Gran, 1897 | | |
| Chaetoceros diversus Cleve, 1873 | also ''Chaetoceros diversus var. papilionis''; | |
| Chaetoceros dubius Pr.-Lavrenko | | |
| Chaetoceros holsaticus Schütt, 1895 | | |
| Chaetoceros insignis Prosckina-Lavrenko | | |
| Chaetoceros laciniosus Schütt, 1895 | | |
| Chaetoceros lauderi Ralfs in Lauder, 1864 | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros lorenzianus f. subsalinus Proshkina-Lavrenko | | |
| Chaetoceros mitra (J.W. Bailey) P.T. Cleve, 1896 | | |
| Chaetoceros muelleri Lemmermann, 1898 | | |
| Chaetoceros neogracilis VanLand., 1968 | ''Chaetoceros gracilis''; | |
| Chaetoceros paulsenii Ostenfeld, 1901 | | |
| Chaetoceros peruvianus Brightw. | | |
| Chaetoceros rigidus Ostenfeld | | |
| Chaetoceros scabrosus Prosckina-Lavrenko | | |
| Chaetoceros seiracanthus Gran, 1897 | | |
| Chaetoceros similis P.T. Cleve, 1896 | | |
| Chaetoceros similis f. solitarius Proschkina-Lavrenko | | |
| Chaetoceros simplex Ostenfeld, 1901 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chaetoceros socialis f. autumnalis A.I. Proshkina-Lavrenko | | |
| Chaetoceros socialis f. vernalis A.I. Proshkina-Lavrenko | | |
| Chaetoceros subtilis (Proschkina-Lavrenko) Proschkina-Lavrenko, 1961 | | |
| Chaetoceros teres P.T. Cleve, 1896 | | |
| Chaetoceros tortissimus Gran, 1900 | | |
| Chaetoceros wighamii Brightwell, 1856 | | |
| Chaetoceros willei Grunow, 1897 | ''Chaetoceros affinis var. willei''; | |
| Chrysochromulina parkeae Green & Leadbeater, 1972 | | |
| Chrysochromulina parva Lackey, 1939 | | |
| Chrysochromulina pontica Rouchijajnen, 1966 | | |
| Cladopyxis brachiolata Stein, 1883 | | |
| Climaconeis inflexa (Brébisson ex Kützing) E.J.Cox, 1982 | ''Amphora inflexa''; | |
| Coccolithus pelagicus (Wallich, 1877) Schiller, 1930 | | |
| Cocconeis scutellum (Grunow in Van Heurck) P.T. Cleve, 1896 | | |
| Cochlodinium adriaticum Schiller, 1933 | | |
| Cochlodinium archimedes (Pouchet, 1883) Lemmermann, 1899 | | |
| Cochlodinium brandtii Wulff, 1916 | | |
| Cochlodinium citron Kofoid & Swezy, 1921 | | |
| Coronosphaera mediterranea (Lohmann, 1902) Gaarder, 1977 | | |
| Corythodinium reticulatum (Stein) Taylor, 1976 | ''Oxytoxum reticulatum''; | |
| Coscinodiscus commutatus Grunow, 1884 | ''Coscinodiscus jonesianus var. commutatus''; | |
| Coscinodiscus gigas Ehrenb. 1841 | | |
| Coscinodiscus granii Gough, 1905 | | |
| Coscinodiscus granii var. aralensis (Ostenfeld 1908) Hustedt | | |
| Coscinodiscus janischii Schmidt, 1878 | | |
| Coscinodiscus jonesianus (Greville) Ostenfeld, 1915 | | |
| Coscinodiscus marginatus Ehrenberg, 1841 (1843, 1844) | | |
| Coscinodiscus oculus-iridis (Ehrenberg) Ehrenberg, 1854 | | |
| Coscinodiscus radiatus Ehrenberg, 1841 | | |
| Cryptomonas adriatica | | |
| Cryptomonas erosa Ehrenberg, 1832 | | |
| Cryptomonas flexa M.I.Roukhiyajnen | | |
| Cryptomonas rubra M.I.Roukhiyajnen | | |
| Cyclotella caspia Grunow, 1878 | | |
| Cylindrotheca closterium (Ehrenberg) Reiman & Lewin, 1964 | | |
| Cystodinium bataviense Klebs 1912 | | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | | |
| Detonula confervacea (P.T. Cleve) Gran, 1900 | | |
| Diatoma tenue C.A. Agardh, 1812 | ''Diatoma elongatum''; | |
| Dictyocha crux Ehrenberg, 1840 | | |
| Dictyocha fibula Ehrenberg | | |
| Dictyocha speculum Ehrenberg | | |
| Dinobryon balticum (Schütt) Lemmermann, 1900 | | |
| Dinobryon divergens O.E. Imhof, 1887 | | |
| Dinophysis acuminata Claparède & Lachmann, 1859 | | |
| Dinophysis acuta Ehrenberg, 1841 | | |
| Dinophysis apiculata Meunier, 1910 | | |
| Dinophysis caudata Saville-Kent, 1881 | | |
| Dinophysis fortii Pavillard, 1923 | | |
| Dinophysis hastata Stein, 1883 | | |
| Dinophysis odiosa (Pavillard, 1930) Tai & Skogsberg, 1934 | | |
| Dinophysis ovum Schütt, 1895 | | |
| Dinophysis sacculus Stein, 1883 | | |
| Dinophysis schilleri Sournia, 1973 | | |
| Dinophysis sphaerica Stein 1883 | | |
| Diploneis chersonensis (Grun. In A. Schmidt) Cleve, 1894 | | |
| Diplopsalis lenticula Bergh, 1881 | also ''Diplopsalis lenticula f. lenticula''; | |
| Diplopsalis lenticula f. globularis Bergh | | |
| Discosphaera tubifera (Murray & Blackman) Ostenfeld 1900 | ''Discosphaera thomsonii''; | |
| Ditylum brightwellii (T. West) Grunow in Van Heurck, 1883 | | |
| Dunaliella salina (Dunal) Teodoresco, 1905 | | |
| Ebria tripartita (Shumann) Lemmermann, 1899 | | |
| Emiliania huxleyi (Lohmann) Hay & Mohler, 1967 | | |
| Entomoneis alata (Ehrenberg) Ehrenberg, 1845 | ''Amphiprora alata''; | |
| Entomoneis paludosa (W. Smith) Reimer, 1975 | ''Amphiprora paludosa''; | |
| Eutreptia lanowii Steuer, 1904 | | |
| Glenodinium paululum Lindemann | | |
| Glenodinium pilula (Ostenfeld) Schiller | | |
| Gonyaulax diegensis Kofoid, 1911 | | |
| Gonyaulax digitale (Pouchet, 1883) Kofoid, 1911 | | |
| Gonyaulax gracilis Schiller, 1935 | | |
| Gonyaulax grindleyi Reinecke, 1967 | | |
| Gonyaulax minima Matzenauer, 1933 | | |
| Gonyaulax orientalis Lindemann, 1924 | | |
| Gonyaulax polygramma Stein, 1883 | | |
| Gonyaulax scrippsae Kofoid, 1911 | | |
| Gonyaulax spinifera (Claparède & Lachmann, 1859) Diesing, 1866 | | |
| Grammatophora marina (Lyngbye) Kützing, 1844 | | |
| Grammatophora oceanica Ehrenberg, 1841 | | |
| Grammatophora serpentina (Ralfs) Ehrenberg | | |
| Guinardia delicatula (Cleve) G.R. Hasle, 1996 | | |
| Guinardia striata (Stoltherfoth) Hasle, 1997 | | |
| Gymnodinium agiliforme Schiller, 1928 | | |
| Gymnodinium arcticum Wulff, 1916 | | |
| Gymnodinium helveticum Penard 1891 | ''Glenodinium apiculatum''; | |
| Gymnodinium kowalevskii Pitzik, 1967 | | |
| Gymnodinium lanskoi Rouchijajnen, 1968 | | |
| Gymnodinium minor Lebour | | |
| Gymnodinium najadeum Schiller, 1928 | | |
| Gymnodinium rhomboides Schütt, 1895 | | |
| Gymnodinium simplex (Lohmann, 1911) Koifoid & Swezy, 1921 | | |
| Gymnodinium variabile Herdman, 1924 | | |
| Gymnodinium wulffii Schiller, 1933 | | |
| Gyrodinium fusiforme Koifoid & Swezy, 1921 | | |
| Gyrodinium lachryma (Meunier, 1910) Kofoid & Swezy, 1921 | | |
| Gyrodinium pingue (Schütt, 1895) Kofoid et Swezy, 1921 | | |
| Gyrodinium pusillum (Schilling) Kofoid & Swezy | | |
| Halopappus quadribrachiatus Schiller | | |
| Halosphaera viridis Schmitz | | |
| Helladosphaera cornifera (Schiller, 1913) Kamptner, 1937 | | |
| Hemiaulus hauckii Grunow in Van Heurck, 1882 | | |
| Hermesinum adriaticum O.Zacharias, 1906 | | |
| Heterocapsa rotundata (Lohmann, 1908) G. Hansen, 1995 | ''Katodinium rotundatum''; | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | | |
| Hexasterias problematica Cleve, 1900 | | |
| Hillea fusiformis (Schiller) Schiller, 1925 | | |
| Hyalodiscus ambiguus (Grun.) Temp. Et Perag. 1890 | | |
| Hyalodiscus scoticus (Kützing) Grunow, 1879 | | |
| Kryptoperidinium foliaceum (Stein, 1883) Lindemann, 1924 | ''Glenodinium foliaceum''; | |
| Kryptoperidinium foliaceum var. ponticum (Roukh.) Krachmalny, 2011 | ''Glenodinium foliaceum var. ponticum''; | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Licmophora ehrenbergii (Kützing) Grunow, 1867 | | |
| Licmophora flabellata C. Agardh, 1830 | | |
| Licmophora gracilis (Ehrenberg) Grunow, 1867 | | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | | |
| Lioloma pacificum (Cupp) Hasle, 1996 | | |
| Lohmannosphaera subclausa Gran et Braarud | | |
| Lyngbya aestuarii (Mertens) Liebman ex Gomont, 1892 | | |
| Lyngbya semiplena (C. Agardh) J. Agardh, 1842 | | |
| Melosira moniliformis (O.F. Müller) C. Agardh, 1824 | | |
| Melosira moniliformis var. subglobosa (Grunow) Hustedt | | |
| Meringosphaera mediterranea Lohmann, 1902 | | |
| Mesoporos perforatus (Gran) Lillick 1937 | | |
| Micracanthodinium bacilliferum (Schiller, 1937) Deflandre, 1937 | ''Cladopyxis bacillifera''; | |
| Navicula cancellata Donkin, 1872 | | |
| Navicula pennata var. pontica Mer. | | |
| Neoceratium candelabrum (Ehrenberg) F.Gómez, D.Moreira & P.López-Garcia, 2001 | ''Ceratium candelabrum''; | |
| Neoceratium falcatum (Kofoid) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium falcatum''; | |
| 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 hircus (Schröder) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium hircus''; | |
| Neoceratium inflatum (Kofoid) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium inflatum''; | |
| Neoceratium lineatum (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium lineatum''; | |
| Neoceratium macroceros (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium macroceros''; | |
| Neoceratium minutum (Jørgensen) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium minutum''; | |
| Neoceratium pentagonum (Gourret) F.Gomez & P.Lopez-Garcia, 2009 | ''Ceratium pentagonum''; | |
| Neoceratium tripos (O.F.Müller) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium tripos''; | |
| Nitzschia holsatica Hust | | |
| Nitzschia incerta (Grunow) M.Peragallo 1903 | ''Nitzschia reversa''; | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Nitzschia tenuirostris Mer. | | |
| Nodularia spumigena Mertens in Jürgens, 1822 | | |
| Oblea rotunda (Lebour, 1922) Balech, 1964 ex Sournia, 1973 | ''Peridiniopsis rotunda''; | |
| Octactis octonaria (Ehrenberg) Hovasse, 1946 | | |
| Odontella mobiliensis (J.W. Bailey) Grunow, 1884 | | |
| Oolithotus fragilis (Lohmann) Martini & C.Müller, 1972 | | |
| Oxyrrhis marina Dujardin, 1841 | | |
| Oxytoxum caudatum Schiller, 1937 | | |
| Oxytoxum gladiolus Stein, 1883 | | |
| Oxytoxum scolopax Stein, 1883 | | |
| Oxytoxum sphaeroideum Stein, 1883 | | |
| Oxytoxum variabile Schiller, 1937 | | |
| Oxytoxum viride Schiller, 1937 | | |
| Palatinus apiculatus (Ehrenberg) S.C.Craveiro, A.J.Calado, N.Daugbjerg & Ø.Moestrup 2009 | ''Peridinium palatinum''; | |
| Palusphaera vandeli Lecal, 1967 | ''Rhabdosphaera longistylis''; | |
| Paralia sulcata (Ehrenberg) P.T. Cleve, 1873 | | |
| Paulsenella chaetoceratis (Paulsen) Chatton | | |
| Peridiniella catenata (Levander, 1894) Balech, 1977 | | |
| Peridiniella danica (Paulsen, 1907) Okolodkov et Dogde, 1995 | ''Glenodinium danicum''; | |
| Peridiniopsis oculatum (F.Stein) Bourrelly, 1968 | also ''Glenodinium oculatum''; | |
| Peridinium aciculiferum Lemmermann, 1900 | | |
| Peridinium bipes Stein | | |
| Peridinium breve Paulsen | | |
| Peridinium cinctum (O.F.Müller) Ehrenberg | | |
| Peridinium knipowitzschii Ussatschew | | |
| Petrodictyon gemma (Ehrenberg) D.G. Mann in Round et al., 1990 | ''Surirella gemma''; | |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | ''Dinophysis rotundata'' and ''Prodinophysis rotundata''; | |
| Phalacroma sphaeroideum Schiller, 1928 | | |
| Pheopolykrikos hartmannii (Zimmermann, 1930) Matsuoka et Fukuyo, 1986 | | |
| Phormidium corallinae (Gomont ex Gomont) Anagnostidis & Komárek, 1988 | ''Oscillatoria corallinae''; | |
| Phormidium nigroviride (Thwaites ex Gomont) Anagnostidis & Komárek, 1988 | ''Oscillatoria nigroviridis''; | |
| Planktoniella sol | | |
| Pleurosigma elongatum W. Smith, 1852 | | |
| Pleurosigma rigidum Smith, 1853 | | |
| Podosira hormoides (Montagne) Kützing | | |
| Polykrikos schwartzii Bütschli 1873 | | |
| Pontosphaera haeckelii Lohmann | | |
| Pontosphaera nigra Schiller | | |
| Pontosphaera pellucida Lohmann | | |
| Poropila dubia Schiller, 1925 | | |
| Proboscia alata (Brightwell) Sundström, 1986 | | |
| Proboscia indica (Peragallo) Hernández-Becerril, 1995 | ''Proboscia alata f. indica'' (H. Péragallo) Ostenfeld; | |
| Pronoctiluca acuta (Lohmann, 1912) Schiller, 1933 | | |
| Pronoctiluca pelagica Fabre-Domerque, 188 | | |
| 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 | also ''Prorocentrum minimum''; | |
| Prorocentrum lima (Ehrenberg, 1860) Stein, 1975 | also ''Prorocentrum marinum''; | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Prorocentrum nanum Schiller, 1918 | also ''Exuviaella pusilla''; | |
| Prorocentrum perforatum Gran, 1915 | | |
| Prorocentrum scutellum Schröder, 1900 | | |
| Prorocentrum vaginulum (Ehrenberg) Dodge | | |
| Protoceratium areolatum Kofoid, 1907 | | |
| Protoceratium reticulatum (Claparède et Lachmann, 1859) Bütschli, 1885 | | |
| Protoperidinium bipes (Paulsen, 1904) Balech, 1974 | also ''Peridinium minusculum''; | |
| Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 | | |
| Protoperidinium brochii (Kofoid & Swezy) Balech | | |
| Protoperidinium conicoides (Paulsen, 1905) Balech, 1973 | | |
| Protoperidinium conicum (Gran, 1900) Balech, 1974 | | |
| Protoperidinium crassipes (Kofoid, 1907) Balech, 1974 | | |
| Protoperidinium decipiens (Jørgensen, 1899) Parke et Dodge, 1976 | | |
| Protoperidinium depressum (Bailey, 1850) Balech, 1974 | | |
| Protoperidinium divergens (Ehrenberg, 1841) Balech, 1974 | | |
| Protoperidinium elegans (Cleve, 1900) Balech, 1974 | | |
| Protoperidinium excentricum (Paulsen, 1907) Balech, 1974 | | |
| Protoperidinium globulus (Stein, 1883) Balech, 1974 | | |
| Protoperidinium granii (Ostenfield, 1906) Balech, 1974 | | |
| Protoperidinium mite (Pavillard, 1916) Balech, 1974 | ''Protoperidinium granii f. mite''; | |
| Protoperidinium oceanicum (VanHöffen, 1897) Balech, 1974 | | |
| Protoperidinium ovatum Pouchet, 1883 | ''Protoperidinium globulus var. ovatum''; | |
| Protoperidinium pallidum (Ostenfeld, 1899) Balech, 1973 | | |
| Protoperidinium pedunculatum (Schütt) Balech, 1895 | | |
| Protoperidinium pellucidum Bergh, 1882 | | |
| Protoperidinium pentagonum (Gran, 1902) Balech, 1974 | | |
| Protoperidinium quarnerense (Schröder, 1900) Balech, 1974 | | |
| Protoperidinium solidicorne (Mangin, 1922) Balech, 1974 | | |
| Protoperidinium steinii (Jörgensen, 1899) Balech, 1974 | | |
| Protoperidinium subinerme (Paulsen, 1904) Loeblich III, 1970 | | |
| Protoperidinium thorianum (Paulsen, 1905) Balech, 1974 | | |
| Protoperidinium tuba (Schiller, 1937) Balech, 1974 | ''Peridinium tuba''; | |
| Prymnesium parvum N. Carter, 1937 | | |
| Pseliodinium vaubanii Sournia | | |
| Pseudo-nitzschia delicatissima (P.T. Cleve, 1897) Heiden, 1928 | | |
| Pseudo-nitzschia inflatula (G.R.Hasle) G.R.Hasle, 1993 | | |
| Pseudo-nitzschia pungens (Grunow ex P.T. Cleve, 1897) Hasle, 1993 | | |
| Pseudo-nitzschia seriata (P.T. Cleve, 1883) H. & M. Peragallo, 1900 | | |
| Pseudopedinella thomsenii Sekiguchi, Kawachi, Nakayama & Inouye, 2003 | ''Pseudopedinella tricostata''; | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | | |
| Pterosperma cristatum Schiller, 1925 | | |
| Pterosperma jorgensii Shiller | | |
| Ptychodiscus noctiluca Stein, 1883 | | |
| Pyramimonas adriaticus Schiller, 1913 | | |
| Pyrocystis elegans Pavillard, 1931 | | |
| Pyrocystis lunula (Schütt) Schütt, 1896 | | |
| Pyrocystis noctiluca J. Murray, 1885 ex Haeckel, 1890 | | |
| Pyrophacus horologicum Stein, 1883 | | |
| Rebecca salina (N.Carter) J.C.Green in Edvardsen et al., 2000 | | |
| Rhabdonema adriaticum Kützing, 1844 | | |
| Rhabdosphaera claviger Murray & Blackman, 1898 | ''Rhabdosphaera stylifera''; | |
| Rhabdosphaera hispida Lohmann | | |
| Rhabdosphaera tubulosa Schiller | | |
| Rhizosolenia acuminata (Peragallo 1892) Gran, 1905 | | |
| Rhizosolenia setigera Brightwell, 1858 | | |
| Rhodomonas baltica Karsten | | |
| Scenedesmus quadricauda (Turpin) Brébisson in Brébisson & Godey, 1835 | | |
| 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 interrupta (Ehrenb.) Grunow., 1862 | | |
| Striatella unipunctata (Lyngb.) Ag. | | |
| Surirella fastuosa (Ehrenberg) Kützing, 1844 | | |
| Synechocystis aquatilis Sauvageau 1892 | | |
| Synedra curvata Pr. Lavrenko | | |
| Syracosphaera bifenestrata Schiller | | |
| Syracosphaera brandti Schiller | | |
| Syracosphaera cordiformis Schiller, 1913 | | |
| Syracosphaera dentata Lohmann | | |
| Syracosphaera pulchra Lohmann | | |
| Syracosphaera spinosa Lohmann | | |
| Tabularia fasciculata (C. Agardh) D.M. Williams & Round, 1986 | ''Synedra tabulata''; | |
| Tetraselmis bilobata Rouchijajnen | | |
| Tetraselmis viridis (Roukhiyajnen) R.E.Norris, Hori & Chihara 1980 | | |
| Thalassionema frauenfeldii (Grunow) Hallegraeff, 1986 | | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira angulata (Gregory) Hasle, 1978 | | |
| Thalassiosira anguste-lineata (A. Schmidt) Fryxell et Hasle, 1977 | | |
| Thalassiosira antiqua var. septata Proschkina-Lavrenko 1955 | | |
| Thalassiosira baltica (Grunow in P.T. Cleve & Grunow) Ostenfeld, 1901 | ''Thalassiosira subsalina''; | |
| Thalassiosira eccentrica (Ehrenberg) P.T. Cleve, 1903-1904 | | |
| Thalassiosira nordenskioeldii P.T. Cleve, 1873 | | |
| Thalassiosira oestrupii (Ostenfeld) Hasle | | |
| Thalassiosira parva Proshk.-Lavr., 1955 | | |
| Torodinium robustum Kofoid & Swezy, 1921 | | |
| Toxarium undulatum J.W. Bailey, 1854 | | |
| Triceratium favus Ehrenberg, 1839 | | |
| Trochiscia brachiolata (Möbius) Lemmermann | | |
| Umbilicosphaera sibogae (Weber-van Bosse, 1901) Gaarder, 1970 | | |