Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Bacteriastrum G.Shadbolt, 1854)
Bacteriastrum pennatum var. halo Brun
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Bacteriastrum pennatum Grunow ex Cleve & Möller, 1888)
Bacteriastrum productum H. L. Smith 1874
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Bacteriastrum G.Shadbolt, 1854)
Chaetoceros aequatorialis Yendo 1905
Doubtful according to GBIF classification (Possible variant of Chaetoceros aequatorialis Cleve)
Chaetoceros anastomosans Gran 1905
Doubtful according to GBIF classification (Possible variant of Chaetoceros anastomosans Grunow)
Chaetoceros antarcticum var. atlanticus (Cleve) F. W. Mills 1933
Homotypic synonym according to GBIF classification (Originally found in sources as synonym of Chaetoceros atlanticus f. atlanticum Cleve, 1873)
Chaetoceros atlanticus Okamura 1907
Doubtful according to GBIF classification (Possible variant of Chaetoceros atlanticus Cleve)
Chaetoceros borealis Schutt 1893
Doubtful according to GBIF classification (Possible variant of Chaetoceros borealis Bailey)
Chaetoceros borealis var. densa Cleve 1897
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Chaetoceros borealis Bailey)
Chaetoceros clevei Peragallo & Peragallo 1904
Doubtful according to GBIF classification (Possible variant of Chaetoceros clevei Schütt, 1895)
Chaetoceros compressus Cleve 1894
Doubtful according to GBIF classification (Possible variant of Chaetoceros compressus Lauder)
Chaetoceros concavicornis A. Mangin
Doubtful according to GBIF classification (Possible variant of Chaetoceros concavicornis L.Mangin)
Chaetoceros convolutus (Castracane) H. Perag.
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Chaetoceros C.G.Ehrenberg, 1844)
Chaetoceros crinitus Gran 1897
Doubtful according to GBIF classification (Possible variant of Chaetoceros crinitus F.Schütt)
Chaetoceros criophilus Cleve 1897
Doubtful according to GBIF classification (Possible variant of Chaetoceros criophilus Castracane)
Chaetoceros criophilus E. Jorgensen 1900
Doubtful according to GBIF classification (Possible variant of Chaetoceros criophilus Castracane)
Chaetoceros criophilus Gran 1904
Doubtful according to GBIF classification (Possible variant of Chaetoceros criophilus Castracane)
Chaetoceros curvisetus Hustedt 1920
Doubtful according to GBIF classification (Possible variant of Chaetoceros curvisetus Cleve)
Chaetoceros debilis Leegaard 1920
Doubtful according to GBIF classification (Possible variant of Chaetoceros debilis Cleve)
Chaetoceros didymus Okamura 1907
Doubtful according to GBIF classification (Possible variant of Chaetoceros didymus Ehrenberg)
Chaetoceros difficilis Karsten 1905
Doubtful according to GBIF classification (Possible variant of Chaetoceros difficilis Cleve)
Chaetoceros distans var. laciniosa (Schütt) Peragallo & Peragallo (1897)
Homotypic synonym according to GBIF classification (Originally found in sources as synonym of Chaetoceros laciniosus f. laciniosus)
Chaetoceros eibenii Grunow 1882
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Chaetoceros C.G.Ehrenberg, 1844)
Chaetoceros elegans (Roth) C. A. Agardh
Doubtful according to GBIF classification (Possible variant of Chaetoceros elegans Gutwinski, 1895)
Chaetoceros gelidus A. Chamnansinp et al.
Doubtful according to GBIF classification (Possible variant of Chaetoceros gelidus L.i.Chamnansinp, Lundholm & Moestrup, 2013)
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Miraltia D.Marino, M.Montresor & A.Zingone, 1987)
Monoceros minimum (Levander) Valikangas 1926
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Monoceros A.C.J.Van Goor, 1924)
? minimum Levander
Homotypic synonym according to GBIF classification (Originally found in sources as doubtful taxon within Chaetocerotaceae)