| Species | as Species | Doubtful |
|---|
Connected successfully| Attheya septentrionalis (Østrup) Crawford in Crawford et al., 1994 | ''Chaetoceros septentrionalis''; | |
| Chaetoceros affinis Lauder, 1864 | ''Chaetoceros schuttii'' and ''Chaetoceros affinis var. affinis''; | |
| Chaetoceros anastomosans Grunow | | |
| Chaetoceros borgei Lemmermann, 1904 | | |
| Chaetoceros calcitrans (Paulsen) Takano, 1968 | ''Chaetoceros simplex var. calcitrans''; | |
| Chaetoceros compressus Lauder, 1864 | | |
| Chaetoceros constrictus Gran, 1897 | | |
| 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 subsecundus''; | |
| Chaetoceros diversus Cleve, 1873 | | |
| Chaetoceros dubius Pr.-Lavrenko | | |
| Chaetoceros fallax Prosckina-Lavrenko, 1955 | | |
| Chaetoceros heterovalvatus Prosckina-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 var. lorenzianus''; | |
| Chaetoceros lorenzianus f. subsalinus Proshkina-Lavrenko | | |
| Chaetoceros lorenzianus var. solitarius Proshkina-Lavrenko | | |
| Chaetoceros muelleri Lemmermann, 1898 | | |
| Chaetoceros paulsenii Ostenfeld, 1901 | | |
| Chaetoceros pelagicus P.T. Cleve, 1873 | | Doubtful |
| Chaetoceros peruvianus Brightw. | | |
| Chaetoceros protuberans H.S.Lauder, 1864 | ''Chaetoceros didymus var. protuberans''; | |
| Chaetoceros rigidus Ostenfeld | | |
| Chaetoceros scabrosus Prosckina-Lavrenko | | |
| Chaetoceros seiracanthus Gran, 1897 | | |
| Chaetoceros similis P.T. Cleve, 1896 | ''Chaetoceros similis var. similis''; | |
| Chaetoceros similis f. solitarius Proschkina-Lavrenko | | |
| Chaetoceros simplex Ostenfeld, 1901 | ''Chaetoceros simplex var. simplex''; | |
| Chaetoceros socialis Lauder, 1864 | ''Chaetoceros socialis var. socialis''; | |
| Chaetoceros socialis f. radians (F. Schütt) A.I. Proshkina-Lavrenko, 1963 | | |
| Chaetoceros subtilis (Proschkina-Lavrenko) Proschkina-Lavrenko, 1961 | ''Chaetoceros subtilis var. subtilis'' (AphiaID: 163131); | |
| Chaetoceros subtilis var. abnormis | | |
| Chaetoceros wighamii Brightwell, 1856 | | |
| Chaetoceros willei Grunow, 1897 | ''Chaetoceros affinis var. willei''; | |