Achnanthosigma mereschowskii Reinhardt, 1882 (uncertain > unassessed )
Arcuatasigma addu G.Reid, 2012
Arcuatasigma arenicolum Lobban, 2018
Arcuatasigma belizense G. Reid, 2018
Arcuatasigma castracanense G.Reid, 2012
Arcuatasigma challengeriense (Castracane) G.Reid, 2012 accepted as Toxonidisigma challengeriense (Castracane) Lobban & G. Reid, 2018
Arcuatasigma closterioides (Grunow) G.Reid, 2012
Arcuatasigma marginale Lobban, 2018
Arcuatasigma spathulatum (Ricard) Lobban & G. Reid, 2018
Carinasigma angustatum (Donkin) G.Reid, 2012
Carinasigma latum (E.J.Cox) G.Reid, 2012
Carinasigma minuta (Donkin) G.Reid, 2012 (unaccepted )
Carinasigma rectum (Donkin) G.Reid, 2012
Cochlearisigma falcatum (Donkin) G.Reid, 2012
Cochlearisigma falcatum var. adriaticum (Grunow) G.Reid, 2012
Cochlearisigma incertum (H.Peragallo) G.Reid, 2012
Cochlearisigma maroccanum (Cleve ex H.Paragallo) G.Reid, 2012
Cochlearisigma ohsinsinum G.Reid, 2012
Cochlearisigma weissflogii (Grunow) G.Reid, 2012
Costasigma simmsiae G.Reid, 2012
Costasigma staurophorum (Grunow) G.Reid, 2012
Donkinia angusta (Donkin) Ralfs, 1861 accepted as Pleurosigma angustum Donkin, 1858
Donkinia angusta var. sumatrana De Wild.
Donkinia antiqua Grove & Sturt, 1887 (uncertain > unassessed )
Donkinia baltica Karsten (uncertain > unassessed )
Donkinia balticum Karsten, 1899 (uncertain > unassessed )
Donkinia carinata Ralfs accepted as Pleurosigma carinatum Donkin, 1858
Donkinia compacta (Greville) Ralfs, 1861 accepted as Pleurosigma compactum var. compactum Greville, 1857
Donkinia cristata (Ehrenberg) Ralfs in Pritchard, 1861 accepted as Navicula cristata Ehrenberg, 1854
Donkinia didyma (Smith) Carruthers, 1864 accepted as Amphiprora didyma W.Smith, 1853
Donkinia diversa Ralfs (uncertain > unassessed )
Donkinia duplex (Donkin) Carruthers, 1864 accepted as Amphiprora duplex var. duplex Donkin, 1858
Donkinia inversa (Ehrenberg) Ralfs in Pritchard, 1861 accepted as Navicula inversa Ehrenberg, 1840
Donkinia lata E.J.Cox, 1983 (uncertain > unassessed )
Donkinia lipscombensis G.Reid, 2012
Donkinia minuta (Donkin) Ralfs, 1861 accepted as Pleurosigma minutum Donkin, 1858
Donkinia recta (Donkin) Grunow, 1883 accepted as Pleurosigma rectum Donkin, 1858
Donkinia recta var. angusta (Donkin) H. Peragallo, 1891 accepted as Pleurosigma angustum Donkin, 1858
Donkinia recta var. intermedia H. Peragallo, 1891 (uncertain > unassessed )
Donkinia recta var. lorenzii (Grunow) H.Peragallo & M.Peragallo, 1898 accepted as Pleurosigma lorenzii Grunow, 1860
Donkinia recta var. minuta (Donkin) H.Peragallo & M.Peragallo, 1898 accepted as Pleurosigma minutum Donkin, 1858
Donkinia recta var. rostrata Frenguelli, 1938 (uncertain > unassessed )
Donkinia recta var. thumii (Cleve in H. Peragallo) Peragallo & Peragallo, 1891 accepted as Donkinia thumii H. Peragallo, 1891
Donkinia reticulata Ralfs in Pritchard, 1861 (uncertain > unassessed )
Donkinia striata Stüwe, 1909 (uncertain > unassessed )
Donkinia subflexuosa Grunow ex Cleve, 1894 (uncertain > unassessed )
Donkinia thumii H. Peragallo, 1891 (uncertain > unassessed )
Gyrosigma acuminatum (Kützing) Rabenhorst, 1853
Gyrosigma acuminatum var. acuminatum (Kützing) Rabenhorst, 1853 accepted as Frustulia acuminata Kützing, 1833
Gyrosigma acuminatum var. angulatum Hagelstein, 1939
Gyrosigma acuminatum var. baikalensis Skvortzov, 1937 (uncertain > unassessed )
Gyrosigma acuminatum var. brebissonii (Grunow) Cleve, 1894 accepted as Pleurosigma brebissonii f. brebissonii Grunow in Cleve & Grunow, 1880
Gyrosigma acuminatum var. curta Grunow in Cleve & Grunow, 1880 accepted as Pleurosigma acuminatum var. curta Grunow in Cleve & Grunow, 1880
Gyrosigma acuminatum var. gallica (Grunow) Cleve, 1894 accepted as Pleurosigma scalprum var. gallicum Grunow in Van Heurck, 1880-1885
Gyrosigma acuminatum var. lacustre (W. Smith) Cleve-Euler, 1952 accepted as Pleurosigma lacustre W.Smith, 1852
Gyrosigma acuminatum var. lacustre Meister accepted as Pleurosigma lacustre W.Smith, 1852
Gyrosigma acuminatum var. neglectum McCall, 1933 (uncertain > unassessed )
Gyrosigma acuminatum var. okamurae (Skvortzow) Skvortzow & Noda, 1971 accepted as Gyrosigma spenceri var. okamurae Skvortzow, 1937
Gyrosigma acuminatum var. spenceri Kirejeva, 1929 (uncertain > unassessed )
Gyrosigma aestuarii (Brébisson ex Kützing) Griffith & Henfrey, 1856 accepted as Navicula aestuarii Brébisson ex Kützing, 1849
Gyrosigma aestuarium Kisselev, 1925 (uncertain > unassessed )
Gyrosigma agellus (Ehrenberg) Rabenhorst, 1853 accepted as Navicula agellus Ehrenberg, 1840
Gyrosigma algoris J.R.Carter, 1981 (uncertain > unassessed )
Gyrosigma angulatum (Quekett) Griffith & Henfrey (uncertain > unassessed )
Gyrosigma angulatum var. angulatum Griffith & Henfrey, 1856 (uncertain > unassessed )
Gyrosigma angulatum var. beta Griffith & Henfrey, 1860 (uncertain > unassessed )
Gyrosigma angulatum var. gamma Griffith & Henfrey, 1860 (uncertain > unassessed )
Gyrosigma angustum (Donkin) Cleve, 1894 accepted as Carinasigma angustatum (Donkin) G.Reid, 2012
Gyrosigma angustum var. angustum (Donkin) Cleve, 1894 accepted as Pleurosigma angustum Donkin, 1858
Gyrosigma angustum var. subflexuosa (Grunow ex Cleve) F.W. Mills, 1934 (uncertain > unassessed )
Gyrosigma angustum var. sumatrana Cleve, 1894 accepted as Donkinia angusta var. sumatrana De Wild.
Gyrosigma apula Rabenhorst, 1853 (uncertain > unassessed )
Gyrosigma arcticum (Cleve) Cleve, 1894
Gyrosigma arcticum var. arcticum (Cleve) Cleve, 1894 accepted as Rhoicosigma arcticum var. arcticum Cleve, 1873
Gyrosigma arcticum var. irregularis (H. Peragallo) Cleve, 1894 accepted as Rhoicosigma arcticum var. irregulare H. Peragallo, 1891
Gyrosigma arcticum var. subflexuosa (Grunow ex Cleve) F.W. Mills, 1934 accepted as Donkinia subflexuosa Grunow ex Cleve, 1894
Gyrosigma arcutum (Donkin) Sterrenburg in Jahn, R., Sterrenburg, F.A.S. & Kusber, W.-H. accepted as Pleurosigma arcuatum Donkin, 1857
Gyrosigma attenuata (Kützing) Rabenhorst, 1853 accepted as Frustulia attenuata Kützing, 1834
Gyrosigma attenuatum (Kützing) Rabenhorst, 1853
Gyrosigma attenuatum f. attenuatum (Kützing) Cleve, 1894 accepted as Frustulia attenuata Kützing, 1834
Gyrosigma attenuatum f. hippocampus (W. Smith) Brockmann, 1950 (uncertain > unassessed )
Gyrosigma attenuatum f. intermedia Petkoff, 1943 (uncertain > unassessed )
Gyrosigma attenuatum f. subbalticum Carlson, 1913 (uncertain > unassessed )
Gyrosigma attenuatum f. typica Rabenhorst, 1858 (uncertain > unassessed )
Gyrosigma attenuatum var. antarcticum Frenguelli & Orlando, 1958 (unaccepted > nomen nudum )
Gyrosigma attenuatum var. asiatica Skvortzow, 1938 (uncertain > unassessed )
Gyrosigma attenuatum var. baicalensis Skvortzow & Meyer, 1928 (uncertain > unassessed )
Gyrosigma attenuatum var. gigas McCall, 1933 (uncertain > unassessed )
Gyrosigma attenuatum var. hippocampus (W. Smith) Cleve-Euler, 1952 (uncertain > unassessed )
Gyrosigma attenuatum var. hippocampus Schulz, 1926 accepted as Navicula hippocampus var. hippocampus Ehrenberg, 1838
Gyrosigma attenuatum var. nipponica Skvortzow, 1936 (uncertain > unassessed )
Gyrosigma attenuatum var. scalprum (Gaillon) Cleve, 1894 accepted as Navicula scalprum Gaillon, 1827
Gyrosigma attenuatum var. tientsinensis (Skvortzov, 2012) (uncertain )
Gyrosigma attenuatum var. typicum Cleve-Euler, 1952 (uncertain > unassessed )
Gyrosigma baculum W.E.Herwig & F.A.S.Sterrenburg, 2014
Gyrosigma baicalense (uncertain > unassessed )
Gyrosigma baicalense f. minus Komarenko in Komarenko & Vasilyeva, 1975 (uncertain > unassessed )
Gyrosigma baicalense f. minus Komarenko, 1957 (uncertain > unassessed )
Gyrosigma baikalensis Skvortzov, 1937 (uncertain > unassessed )
Gyrosigma baileyi (Grunow in Cleve & Grunow) Cleve, 1894 accepted as Pleurosigma baileyi Grunow in Cleve & Grunow, 1880