| Species | as Species | Doubtful |
|---|
Connected successfully| Achradina sulcata Lohmann | | |
| Asterionellopsis glacialis (Castracane) Round in Round et al., 1990 | ''Asterionella japonica''; | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | ''Cerataulina bergonii''; | |
| Chaetoceros affinis Lauder, 1864 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros peruvianus Brightw. | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chaetoceros subtilis (Proschkina-Lavrenko) Proschkina-Lavrenko, 1961 | | |
| Cochlodinium adriaticum Schiller, 1933 | ''Gyrodinium adriaticum''; | |
| Coscinodiscus janischii Schmidt, 1878 | | |
| Cyclotella caspia Grunow, 1878 | | |
| Dinophysis caudata Saville-Kent, 1881 | | |
| Dinophysis fortii Pavillard, 1923 | | |
| Dinophysis ovum Schütt, 1895 | | |
| Diplopsalis lenticula Bergh, 1881 | | |
| Distephanus speculum (Ehrenberg) Haeckel, 1887 | ''Distephanus speculum var. speculum''; | |
| Emiliania huxleyi (Lohmann) Hay & Mohler, 1967 | ''Coccolithus huxleyi''; | |
| Gonyaulax minima Matzenauer, 1933 | | |
| Hermesinum adriaticum O.Zacharias, 1906 | | |
| Hillea fusiformis (Schiller) Schiller, 1925 | | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Meringosphaera mediterranea Lohmann, 1902 | | |
| Mesoporos perforatus (Gran) Lillick 1937 | ''Porella perforata''; | |
| Neoceratium furca (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium furca''; | |
| Neoceratium fusus (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium fusus''; | |
| Neoceratium tripos (O.F.Müller) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium tripos''; | |
| Nitzschia tenuirostris Mer. | | |
| Octactis octonaria (Ehrenberg) Hovasse, 1946 | ''Distephanus octonarius var. octonarius''; | |
| Paralia sulcata (Ehrenberg) P.T. Cleve, 1873 | ''Melosira sulcata''; | |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | | |
| Poropila dubia Schiller, 1925 | | |
| Prorocentrum compressum (Bailey, 1850) Abé ex Dodge, 1975 | ''Exuviaella compressa''; | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | ''Exuviaella cordata''; | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Protoperidinium crassipes (Kofoid, 1907) Balech, 1974 | ''Peridinium crassipes''; | |
| Protoperidinium divergens (Ehrenberg, 1841) Balech, 1974 | ''Peridinium divergens''; | |
| Protoperidinium steinii (Jörgensen, 1899) Balech, 1974 | ''Peridinium steinii''; | |
| Pseudo-nitzschia seriata (P.T. Cleve, 1883) H. & M. Peragallo, 1900 | ''Nitzschia seriata''; | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | ''Rhizosolenia calcar-avis''; | |
| Pterosperma cristatum Schiller, 1925 | | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Syracosphaera pulchra Lohmann | | |
| Tabularia fasciculata (C. Agardh) D.M. Williams & Round, 1986 | ''Synedra tabulata''; | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira eccentrica (Ehrenberg) P.T. Cleve, 1903-1904 | | |
| Thalassiosira parva Proshk.-Lavr., 1955 | | |
| Torodinium robustum Kofoid & Swezy, 1921 | | |