Bacterosira constricta (Gaarder 1938) J. S. Park & J. H. Lee 2016
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Bacterosira H.H.Gran, 1900)
Coscinodiscus eccentricus Ehrenberg 1840
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Coscinodiscus C.G.Ehrenberg, 1839)
Coscinodiscus gravidus (Cleve) Cleve-Euler 1951
Homotypic synonym according to GBIF classification (Originally found in sources as synonym of Thalassiosira gravida f. gravida)
Coscinodiscus lacustris var. hyperboreus Grunow
Homotypic synonym according to GBIF classification (Originally found in sources as doubtful taxon within Thalassiosira bramaputrae (Ehrenb.) Håk. & Locker)
Coscinodiscus nordenskioeldii (P. T. Cleve) Cleve-Euler 1951
Homotypic synonym according to GBIF classification (Originally found in sources as synonym of Thalassiosira nordenskioeldii f. nordenskioeldii)
Coscinodiscus tumidus Janisch 1874
Homotypic synonym according to GBIF classification (Originally found in sources as synonym of Coscinodiscus tumidus var. tumidus)
Coscinosira bioculata (Grunow) Heiden 1928
Homotypic synonym according to GBIF classification (Originally found in sources as synonym of Coscinodiscus bioculatus var. bioculatus)
Minidiscus proschkinae (Makarova) J. S. Park & J. H. Lee 2017
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Minidiscus G.R.Hasle, 1973)
Porosira punctata (Jouse) Makarova 1988
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Porosira E.Jorgensen, 1905)
Shionodiscus bioculatus (Grunow) Alverson, Kang & Theriot
Homotypic synonym according to GBIF classification (Originally found in sources as synonym of Coscinodiscus bioculatus var. bioculatus)
Shionodiscus oestrupii (Ostenfeld) A. J. Alverson, S. H. Kang & E. C. Theriot 2006
Homotypic synonym according to GBIF classification (Originally found in sources as synonym of Coscinosira oestrupii Ostenfeld, 1900)
Shionodiscus oestrupii Ostenf
Homotypic synonym according to GBIF classification (Originally found in sources as synonym of Coscinosira oestrupii Ostenfeld, 1900)
Thalassiosira antarctica Comber 1896
Doubtful according to GBIF classification (Possible variant of Thalassiosira antarctica Karsten, 1905)
Thalassiosira complicata Lange-Bert.
Doubtful according to GBIF classification (Possible variant of Thalassiosira complicata Gersonde, 1991)
Thalassiosira decipiens var. condensata (Cleve)
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Thalassiosira decipiens (Grunow) E.G.Jørgensen, 1905)
Thalassiosira delicatula Hustedt 1958
Doubtful according to GBIF classification (Possible variant of Thalassiosira delicatula Ostenfeld, 1908)
