• Conticribra guillardii (Hasle) K.Stachura-Suchoples & D.M.Williams, 2009 † accepted as Thalassiosira guillardii Hasle, 1978
• Conticribra weissflogii (Grunow) K.Stachura-Suchoples & D.M.Williams, 2009 †
• Coscinosira mediterranea Schröder, 1911 (uncertain > unassessed)
• Coscinosira oestrupii Ostenfeld, 1900 represented as Shionodiscus oestrupii (Ostenfeld) A.J.Alverson, S.H.Kang & E.C.Theriot, 2006
• Coscinosira polychorda (Gran) Gran, 1900 accepted as Coscinodiscus polychordus Gran, 1897
• Coscinosira poroseriata Ramsfjell, 1959 (uncertain > unassessed)
• Cyclostephanos dubius (Hustedt) Round, 1988 accepted as Cyclotella dubia var. dubia Fricke in Schmidt et al., 1900
• Cyclotella antiqua W.Smith, 1853 accepted as Lindavia antiqua (W.Smith) Nakov et al., 2015
• Cyclotella atomus Hustedt, 1937 (uncertain > unassessed)
• Cyclotella baltica (Grunow) H.Håkansson accepted as Cyclotella striata var. baltica Grunow in Van Heurck, 1882
• Cyclotella caspia Grunow, 1878 (uncertain > unassessed)
• Cyclotella choctawhatcheeana Prasad, 1990 (uncertain > unassessed)
• Cyclotella comensis Grunow in Van Heurck, 1882 accepted as Pantocsekiella comensis (Grunow in Van Heurck, 1882) K.T. Kiss & Ács, 2016
• Cyclotella comta (Ehrenberg) Kützing, 1849
• Cyclotella comta f. radiosa Grunow in Van Heurck, 1882 (uncertain > unassessed)
• Cyclotella comta var. melosiroides Kirchner in Schröter & Kirchner, 1896 (uncertain > unassessed)
• Cyclotella comta var. radiosa Grunow, 1882 accepted as Cyclotella radiosa (Grunow) Lemmermann, 1900 accepted as Cyclotella comta f. radiosa Grunow in Van Heurck, 1882
• Cyclotella cryptica Reimann, Lewin & Guillard, 1963 (uncertain > unassessed)
• Cyclotella distinguenda Hustedt, 1928 (uncertain > unassessed)
• Cyclotella dubia Fricke, 1900 accepted as Cyclostephanos dubius (Hustedt) Round, 1988 accepted as Cyclotella dubia var. dubia Fricke in Schmidt et al., 1900
• Cyclotella dubia var. dubia Fricke in Schmidt et al., 1900 (uncertain > unassessed)
• Cyclotella glomerata H.Bachmann, 1911 (uncertain > unassessed)
• Cyclotella glomerata f. glomerata Bachmann, 1911 (uncertain > unassessed)
• Cyclotella hakanssoniae Wendker, 1991 (uncertain > unassessed)
• Cyclotella krammeri Håkansson, 1990 (uncertain > unassessed)
• Cyclotella kuetzingiana Thwaites, 1848 accepted as Pantocsekiella kuetzingiana (Thwaites, 1848) K.T. Kiss & Ács, 2016
• Cyclotella kuetzingiana var. radiosa Fricke in Schmidt et al., 1900 accepted as Lindavia kuetzingiana var. radiosa (Fricke) Nakov et al., 2015
• Cyclotella kützingiana Thwaites accepted as Cyclotella kuetzingiana Thwaites, 1848 accepted as Pantocsekiella kuetzingiana (Thwaites, 1848) K.T. Kiss & Ács, 2016
• Cyclotella kützingiana var. nobilis Cleve-Euler, 1910 accepted as Cyclotella krammeri Håkansson, 1990
• Cyclotella kützingiana var. planetophora Fricke accepted as
• Cyclotella laevissima Van Goor, 1920 (uncertain > unassessed)
• Cyclotella melosiroides (Kirchner) Lemmermann, 1900 accepted as Cyclotella comta var. melosiroides Kirchner in Schröter & Kirchner, 1896
• Cyclotella meneghiniana Kützing, 1844
• Cyclotella meneghiniana f. plana (Fricke) Hustedt, 1928 (uncertain > unassessed)
• Cyclotella meneghiniana var. laevissima (Van Goor) Hustedt, 1928 accepted as Cyclotella laevissima Van Goor, 1920
• Cyclotella meneghiniana var. stelligera Cleve & Grunow, 1881 (uncertain > unassessed)
• Cyclotella minutula Kützing, 1844 † (uncertain > unassessed)
• Cyclotella nana Hustedt, 1957 (uncertain > unassessed)
• Cyclotella ocellata Pantocsek, 1901 accepted as Pantocsekiella ocellata (Pantocsek, 1901) K.T. Kiss & Ács, 2016
• Cyclotella operculata (C.Agardh) Brébisson, 1838 accepted as Frustulia operculata C.Agardh, 1827 accepted as Epithemia operculata (C.Agardh) Ruck & Nakov
• Cyclotella operculata auct. accepted as Cyclotella operculata (C.Agardh) Brébisson, 1838 accepted as Frustulia operculata C.Agardh, 1827 accepted as Epithemia operculata (C.Agardh) Ruck & Nakov
• Cyclotella planctonica Brunnthaler, 1901 (uncertain > unassessed)
• Cyclotella radiosa (Grunow) Lemmermann, 1900 accepted as Cyclotella comta f. radiosa Grunow in Van Heurck, 1882
• Cyclotella rotula Kützing, 1844 accepted as Discoplea rotula Ehrenberg, 1844
• Cyclotella schumannii (Grunow) Håk.
• Cyclotella scotica Kützing, 1844 (uncertain > unassessed)
• Cyclotella socialis Schütt, 1899
• Cyclotella stelligera Cleve & Grunow, 1882
• Cyclotella striata (Kützing) Grunow, 1880
• Cyclotella striata var. baltica Grunow in Van Heurck, 1882 (uncertain > unassessed)
• Cyclotella striata var. subsalina (Grunow) Hustedt, 1928 accepted as Cyclotella subsalina Grunow, 1882
• Cyclotella subsalina Grunow, 1882 (uncertain > unassessed)
• Cyclotella wulfiae Meyer & Håkansson, 1997 (uncertain > unassessed)
• Detonula confervacea (Cleve) Gran, 1896 accepted as Lauderia confervacea Cleve, 1896
• Detonula delicatula (H.Peragallo) Gran, 1900 accepted as Lauderia delicatula H.Peragallo, 1888
• Detonula pumila (Castracane) Gran, 1900 accepted as Lauderia pumila Castracane, 1886
• Discostella glomerata (H.Bachmann) Houk & Klee, 2004 accepted as Cyclotella glomerata f. glomerata Bachmann, 1911
• Discostella stelligera (Cleve & Grunow) Houk & Klee, 2004 accepted as Cyclotella meneghiniana var. stelligera Cleve & Grunow, 1881
• Lauderia annulata Cleve, 1873 (uncertain > unassessed)
• Lauderia borealis Gran, 1900 (uncertain > unassessed)
• Lauderia confervacea Cleve, 1896 (uncertain > unassessed)
• Lauderia delicatula H.Peragallo, 1888 (uncertain > unassessed)
• Lauderia fragilis Gran, 1897 (uncertain > unassessed)
• Lauderia glacialis (Grunow) Gran, 1900 accepted as Podosira hormoides var. glacialis Grunow, 1884
• Lauderia mediterranea H.Peragallo, 1888 (uncertain > unassessed)
• Lauderia pumila Castracane, 1886 (uncertain > unassessed)
• Lauderia schroederi Bergon, 1902 (uncertain > unassessed)
• Lindavia antiqua (W.Smith) Nakov et al., 2015
• Lindavia comensis (Grunow in Van Heurck) Nakov et al., 2015
• Lindavia comta (Ehrenberg) Nakov et al., 2015
• Lindavia kuetzingiana (Thwaites) Nakov et al., 2015
• Lindavia kuetzingiana var. radiosa (Fricke) Nakov et al., 2015
• Lindavia ocellata (Pantocsek) Nakov et al., 2015 accepted as Pantocsekiella ocellata (Pantocsek, 1901) K.T. Kiss & Ács, 2016
• Microsiphona potamos C.I.Weber, 1970 (uncertain > unassessed)
• Minidiscus comicus Takano, 1981 (uncertain > unassessed)
• Minidiscus decoratus Chrétiennot-Dinet & Quiroga, 2004 (uncertain > unassessed)
• Minidiscus trioculatus (F.J.R.Taylor) Hasle, 1973 accepted as Coscinodiscus trioculatus F.J.R.Taylor, 1966
• Pantocsekiella comensis (Grunow in Van Heurck, 1882) K.T. Kiss & Ács, 2016
• Pantocsekiella kuetzingiana (Thwaites, 1848) K.T. Kiss & Ács, 2016
• Pantocsekiella ocellata (Pantocsek, 1901) K.T. Kiss & Ács, 2016
• Planktoniella sol (C.G.Wallich) Schütt, 1892 accepted as Coscinodiscus sol C.G.Wallich, 1860
• Porosira glacialis (Grunow) Jörgensen, 1905 (uncertain > unassessed)
• Porosira pentaportula Syvertsen & Lange, 1990 (uncertain > unassessed)
• Puncticulata radiosa (Grunow) H.Hakansson, 2002 (uncertain > unassessed)
• Shionodiscus gracilis (Karsten) A.J. Alverson, S.H. Kang & E.C. Theriot, 2006 accepted as Coscinodiscus gracilis Karsten, 1905
• Shionodiscus gracilis var. expectus (VanLandingham) A.J.Alverson; S.H.Kang & E.C.Theriot, 2006 accepted as Thalassiosira expecta VanLandingham, 1978
• Shionodiscus oestrupii (Ostenfeld) A.J.Alverson, S.H.Kang & E.C.Theriot, 2006
• Skeletonema costatum (Greville) Cleve, 1873
• Skeletonema dohrnii Sarno & Kooistra, 2005 (uncertain > unassessed)
• Skeletonema grethae Zingone & Sarno, 2005 (uncertain > unassessed)
• Skeletonema japonicum Zingone & Sarno, 2005 (uncertain > unassessed)
• Skeletonema marinoi Sarno & Zingone, 2005 (uncertain > unassessed)
• Skeletonema menzelii Guillard, Carpenter & Reimann, 1974 (uncertain > unassessed)
• Skeletonema potamos (C.I.Weber) Hasle, 1976 accepted as Microsiphona potamos C.I.Weber, 1970
• Skeletonema pseudocostatum L.K.Medlin, 1991 (uncertain > unassessed)
• Skeletonema subsalsum (Cleve-Euler) Bethge, 1928 (uncertain > unassessed)
• Skeletonema tropicum Cleve, 1900 (uncertain > unassessed)
• Stephanodiscus alpinus Hustedt, 1942 (uncertain > unassessed)
• Stephanodiscus astraea (Ehrenberg) Grunow, 1880
• Stephanodiscus astraea var. minutula (Kützing) Grunow, 1882 accepted as Cyclotella minutula Kützing, 1844 †