DiatomBase
Between brackets is the number of accepted extant species
Click on "-" to collapse/hide all child taxa
Shows the number of accepted extant species within the taxon
The last expanded taxon is highlighted
Click on "+" to expand/show all child taxa
Click to see the taxon details page
- Bacillariophyceae (5 957)
- Subclass Bacillariophyceae incertae sedis (189)
- Subclass Bacillariophycidae (4 408)
- Subclass Coscinodiscophycidae (877)
- Superorder Biddulphianae (230)
- Order Anaulales (7)
- Order Biddulphiales (38)
- Order Hemiaulales (17)
- Order Triceratiales (168)
- Family Odontellaceae P.A. Sims, D.M. Williams & Ashworth, 2018
- Family Plagiogrammaceae De Toni, 1890 (26)
- Family Triceratiaceae (Schütt) Lemmermann, 1899 (142)
- Genus Amphitetras C.G. Ehrenberg, 1840 (3)
- Genus Auliscus C.G. Ehrenberg, 1843 (25)
- Genus Australodiscus V. Porguen & M.J. Sullivan, 1997 †
- Genus Cerataulus Ehrenberg, 1844 (7)
- Genus Eupodiscus J.W. Bailey, 1851 (2)
- Genus Hobaniella P.A. Sims & D. M. Williams in Sims et al, 2018 (1)
- Genus Jouserella T.F.Kozyrenko in T.F.Kozyrenko & N.I.Strelnikova, 2012 †
- Genus Lampriscus A. Schmidt in A. Schmidt et al., 1882 (2)
- Genus Odontella C.A. Agardh, 1832 (1)
- Genus Petrochiscus N.I. Hendey & P.A. Sims, 2002 †
- Genus Pleurosira (G. Meneghini) V.B.A. Trevisan di San Leon, 1848 (4)
- Genus Porguenia M.J. Sullivan, 1997 †
- Genus Praetriceratium P.A. Sims, 2001 †
- Genus Proteucylindrus C.-W. Li & Y.-M. Chiang, 1979
- Genus Pseudauliscus A. Schmidt in A. Schmidt et al., 1875 (1)
- Genus Pseudictyota P.A.Sims & D.M.Williams in Sims et al., 2018 (3)
- Genus Ralfsiella P.A. Sims, D. M. Williams & Ashworth, 2018 (2)
- Genus Sheshukovia Z.I.Glezer, 1975 † (1)
- Genus Triceratium C.G. Ehrenberg, 1839 (90)
- Species Triceratium abercrombieana Greville, 1861
- Species Triceratium abyssale Castracane, 1886
- Species Triceratium abyssorum Grunow † accepted as Medlinia abyssorum (Grunow) P.A.Sims, 1998 †
- Species Triceratium acceptum Greville, 1865
- Species Triceratium aculeatum Ehrenberg, 1856
- Species Triceratium aculeatum Greville, 1861
- Species Triceratium aculeatum Schibkova in Krotov & Schibkova, 1959
- Species Triceratium acutangulum Grunow
- Species Triceratium acutangulum Grunow in Van Heurck, 1883
- Species Triceratium acutangulum Strelnikova, 1974
- Species Triceratium acutum Ehrenberg, 1844 (1845)
- Species Triceratium admirabile Debes ex Hustedt in Schmidt et al., 1930
- Species Triceratium adspersum Schmidt in Schmidt et al., 1882
- Species Triceratium adspersum (Mann) F.W. Mills, 1935 accepted as Trigonium adspersum Mann, 1907
- Species Triceratium affine Grunow in Van Heurck, 1883
- Species Triceratium africanum Ehrenberg, 1854
- Species Triceratium agnellus Krotov in Krotov & Schibkova, 1959
- Species Triceratium alatum Arkhangelskii, 1953
- Species Triceratium albifrons Brun in Schmidt et al., 1891
- Species Triceratium album Long, Fuge & Smith, 1946
- Species Triceratium alternans Bailey, 1851 accepted as Trigonium alternans (Bailey) A.Mann, 1907
- Species Triceratium alternans sensu Schmidt in Schmidt et al., 1882
- Species Triceratium alternans (Ehrenberg) Schütt, 1896 accepted as Amphipentas alternans Ehrenberg, 1843 †
- Species Triceratium alveolatum Bergon in Bergon et al., 1890
- Species Triceratium amblyoceros Ehrenberg accepted as Symbolophora amblyoceros (Ehrenberg) Hasle & Sims, 1986
- Species Triceratium amblyoceros sensu Brightwell, 1853
- Species Triceratium americanum (J.W. Bailey) Cleve-Euler, 1951 accepted as Tetragramma americana Bailey, 1854
- Species Triceratium americanum Schmidt in Schmidt et al., 1882
- Species Triceratium americanum sensu Schmidt in Schmidt et al., 1882
- Species Triceratium amoenum Greville, 1861
- Species Triceratium amplexum Schmidt in Schmidt et al., 1882
- Species Triceratium ananinense Pantocsek, 1889
- Species Triceratium anastomosans Grove in Schmidt et al., 1890
- Species Triceratium anderssonii Cleve, 1881
- Species Triceratium andetiluvianum
- Species Triceratium anissimovae (Jousé) Strelnikova, 1974 accepted as Trinacria anissimovii Jousé, 1949
- Species Triceratium annulatum Wallich, 1858
- Species Triceratium anostomosans Grove in A. Schmidt, 1890
- Species Triceratium antarcticum Janisch in Schmidt et al., 1882
- Species Triceratium antarcticum Cleve
- Species Triceratium antediluviana
- Species Triceratium antediluvianum (Ehrenberg) Grunow, 1868 accepted as Biddulphia antediluviana (Ehrenberg) Van Heurck, 1885
- Species Triceratium antillarum Cleve
- Species Triceratium antipodum J.Pantocsek, 1892 † accepted as Entogoniopsis foveata (R.K. Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium antiquum Pantocsek, 1886 represented as Azpeitia antiqua (Pantocsek) P.A. Sims in Fryxell, Sims & Watkins, 1986
- Species Triceratium antiquum sensu Lefebure, 1935
- Species Triceratium appertii Kanaya, 1963
- Species Triceratium approximatum Greville, 1861
- Species Triceratium apsteinii Pantocsek, 1908
- Species Triceratium araneosum Greville, 1865
- Species Triceratium archangelskianum O.N.Witt
- Species Triceratium arcticum Brightwell, 1853 accepted as Trigonium arcticum (Brightwell) Cleve, 1868
- Species Triceratium arcticum Pedicino ex Rabenhorst, 1861-1879
- Species Triceratium arcuatum Shadbolt, 1854
- Species Triceratium areolatum Harting, 1852
- Species Triceratium areolatum Greville
- Species Triceratium argus Janisch in Schmidt et al., 1885
- Species Triceratium arietinum Schmidt in Schmidt et al., 1886
- Species Triceratium arisatum (Shadbolt)
- Species Triceratium armasevskii Pantocsek, 1905 † accepted as Entogoniopsis armashevskii (J.Pantocsek) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium armatum Roper, 1854 accepted as Triceratium spinosum J.W.Bailey, 1844
- Species Triceratium arrogans Truan y Luard & Witt, 1888
- Species Triceratium ascensionis Leuduger-Fortmorel, 1898
- Species Triceratium atlanticum Castracane, 1886
- Species Triceratium atomus Greville, 1865
- Species Triceratium attennatum
- Species Triceratium attenuatum R.K.Greville, 1864 †
- Species Triceratium auliscoides Grove & Sturt, 1887
- Species Triceratium balaniferum J.Tempère & J.Brun in J.Brun & J.Tempère, 1889 † accepted as Entogoniopsis balanifera (J.Tempère & J.Brun) J. Witkowski, P.A. Sims, N.I. Strelnikova & D.M. Williams, 2015 †
- Species Triceratium balearicum Cleve, 1881
- Species Triceratium barbadense Greville, 1861
- Species Triceratium barbadense sensu Grove & Sturt, 1887
- Species Triceratium barboi (Brun) Desikachary & Devi, 1986 accepted as Capsula barboi Brun, 1896
- Species Triceratium barkerii Desikachary & Sreelatha, 1989
- Species Triceratium basilica Brun in Schmidt et al., 1892
- Species Triceratium bellum Long, Fuge & Smith, 1946
- Species Triceratium bergonii Tempère & Brun, 1889 †
- Species Triceratium besseyi Pantocsek, 1908
- Species Triceratium bicorne Cleve, 1878 † accepted as Pseudictyota bicorne (Cleve) P.A. Sims & D. M. Williams in Sims et al., 2018 †
- Species Triceratium bicornigerum Hanna, 1927
- Species Triceratium biddulphia Heiberg, 1863
- Species Triceratium biforme Hustedt in Schmidt et al., 1959
- Species Triceratium biharense Pantocsek, 1892
- Species Triceratium bimarginatum Grove & Sturt, 1887
- Species Triceratium biquadratum Janisch, 1886
- Species Triceratium bireticulatum Barker & Meakin, 1945
- Species Triceratium blanditum Greville, 1861
- Species Triceratium blandum O. Witt in A. Schmidt, 1886
- Species Triceratium boryanum Pantocsek, 1889
- Species Triceratium bowerbankiana Ralfs in Pritchard, 1861
- Species Triceratium brachiatum T.Brightwell, 1856 † accepted as Fenneria brachiata (T.Brightwell) J.Witkowski, 2018 †
- Species Triceratium brachiolatum Brightwell, 1853
- Species Triceratium brandtii Pantocsek, 1892
- Species Triceratium brevinervum Greville, 1865
- Species Triceratium brightwellii T.West, 1860 accepted as Ditylum brightwellii (T.West) Grunow, 1885
- Species Triceratium broeckii Leuduger-Fortmorel, 1879
- Species Triceratium brookei Schmidt in Schmidt et al., 1885
- Species Triceratium browneanum Greville, 1861
- Species Triceratium brunii Pantocsek, 1886
- Species Triceratium bullatum Grove in Bergon et al., 1890
- Species Triceratium bullosum Witt, 1873
- Species Triceratium caducum Pantocsek, 1892
- Species Triceratium caelatum Janisch, 1885
- Species Triceratium caelatum sensu Grove & Sturt, 1886
- Species Triceratium californicum Grunow in Van Heurck, 1883
- Species Triceratium calvescens Castracane, 1886
- Species Triceratium cambroneroi Azpeitia, 1911
- Species Triceratium campechianum Grunow in Cleve, 1878
- Species Triceratium canalifer Brun, 1891
- Species Triceratium cancellatum Greville
- Species Triceratium cancellatum sensu Grove & Sturt, 1886
- Species Triceratium cancellatum sensu Moller, 1892
- Species Triceratium capitatum J.Ralfs ex Greville
- Species Triceratium capitiferum Hustedt in Schmidt et al., 1959
- Species Triceratium carbonarium Ehrenberg in Roth, 1854
- Species Triceratium caribaeum Walker & Chase in Chase & Walker, 1887
- Species Triceratium carinatum Ehrenberg, 1855
- Species Triceratium cariosum Castracane, 1886
- Species Triceratium castellatum T.West
- Species Triceratium castelliferum A.Grunow, 1888 † accepted as Sheshukovia castellifera (A.Grunow) J.Witkowski, 2022 †
- Species Triceratium castracanei Pantocsek, 1886
- Species Triceratium caudatum Witt, 1885
- Species Triceratium celebense Schmidt in Schmidt et al., 1882
- Species Triceratium cellulosum
- Species Triceratium centralis (Boyer) VanLandingham, 1968 accepted as Biddulphia centralis Boyer, 1922
- Species Triceratium chenevieri Meister, 1937
- Species Triceratium cinnamomeum Greville
- Species Triceratium circulare A.M.Edwards
- Species Triceratium circumvallatum Hustedt in Schmidt et al., 1959
- Species Triceratium clavatum Grove in Schmidt et al., 1896
- Species Triceratium clypeolus (Boyer) VanLandingham, 1968 accepted as Biddulphia clypeolus Boyer, 1922
- Species Triceratium coelatum Janisch ex Proschkina-Lavrenko, 1949
- Species Triceratium coerulescens Pantocsek, 1892
- Species Triceratium columbi O.N.Witt
- Species Triceratium compactum Brightwell ex Ralfs in Pritchard, 1861
- Species Triceratium compar Schmidt in Schmidt et al., 1885
- Species Triceratium comtum Ehrenberg, 1843
- Species Triceratium concavum Harvey & J.W. Bailey, 1853 (1854)
- Species Triceratium conciliatum Pantocsek
- Species Triceratium concinnum Greville, 1864
- Species Triceratium condecorum Ehrenberg
- Species Triceratium condecorum Schmidt in Schmidt et al., 1882
- Species Triceratium coniferum Brightwell, 1856
- Species Triceratium coniferum sensu Tempère & Peragallo, 1889-1895
- Species Triceratium consimile Grunow in Van Heurck, 1883
- Species Triceratium constans Greville, 1863
- Species Triceratium constellatum Tempère & Brun in Brun & Tempère, 1889
- Species Triceratium contortum Shadbolt, 1854
- Species Triceratium contumax (Mann)
- Species Triceratium conturianum Tempere & Brun in Tempere & Peragallo, 1915
- Species Triceratium convexiusculum Grunow in Schmidt et al., 1890
- Species Triceratium convexum Greville, 1862
- Species Triceratium cordiferum Grove & Sturt, 1887
- Species Triceratium cornutum R.K.Greville † accepted as Trinacria cornuta (R.K.Greville) P.A.Sims & R.Ross, 1988 †
- Species Triceratium coronatum (Witt) Strelnikova, 1974 accepted as Trinacria coronata Witt, 1885 †
- Species Triceratium coronatum Castracane, 1886
- Species Triceratium coronatum Leuduger-Fortmorel, 1898
- Species Triceratium coscinoides E.Grove & G.Sturt
- Species Triceratium couturianum Tempère & Brun in Tempère, 1890
- Species Triceratium crassum Shadbolt, 1854
- Species Triceratium crebrestriatum Grove in Bergon et al., 1890
- Species Triceratium crenatum Kitton ex Ralfs in Pritchard, 1861
- Species Triceratium crenulatum E.Grove & G.Sturt
- Species Triceratium crispulum Hustedt in Schmidt et al., 1959
- Species Triceratium cristatum Pantocsek, 1892
- Species Triceratium crouanii M. Peragallo in Tempère & Peragallo, 1910
- Species Triceratium cruciatum (Janisch & Rabenhorst) Cleve, 1878 accepted as Amphitetras cruciata Janisch & Rabenhorst, 1863
- Species Triceratium cruciferum (Kitton) Grunow in Van Heurck, 1883 accepted as Amphitetras crucifera Kitton in Ralfs in Pritchard, 1861
- Species Triceratium cruciforme Schmidt in Schmidt et al., 1882
- Species Triceratium cruvinervia (Boyer) VanLandingham, 1968 accepted as Biddulphia curvinervia C.S.Boyer, 1922 †
- Species Triceratium crux T.Brightwell
- Species Triceratium cucullatum Pantocsek
- Species Triceratium cultum Schmidt in Schmidt et al., 1891
- Species Triceratium cuneatum Schmidt, 1888
- Species Triceratium curvatovittatum Schmidt in Schmidt et al., 1886
- Species Triceratium curvibaccatum Brun, 1894
- Species Triceratium curvicostatum J.Brun, 1896 † accepted as Entogoniopsis curvicostata (J.Brun) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium curvilimbum J.-J.Brun
- Species Triceratium cuspidatum Janisch in Schmidt et al., 1885
- Species Triceratium cyclamen Brun in Schmidt et al., 1891
- Species Triceratium davidsonianum Truan y Luard & Witt, 1888
- Species Triceratium davyanum Greville, 1862
- Species Triceratium debesii Pantocsek, 1889
- Species Triceratium debyi Leuduger-Fortmorel, 1898
- Species Triceratium decorum Greville, 1862
- Species Triceratium deductum Pantocsek, 1892
- Species Triceratium definitum Greville, 1864
- Species Triceratium deformatum Pantocsek, 1889
- Species Triceratium delectabile Pantocsek, 1892
- Species Triceratium delicatulum Greville, 1861
- Species Triceratium demissum Hustedt in Schmidt et al., 1959
- Species Triceratium denticulatum Greville, 1863 † accepted as Trilamina denticulata (R.K.Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium detonii Pantocsek, 1892
- Species Triceratium diaphanum (Mann) F.W. Mills, 1935 accepted as Trigonium diaphanum A.Mann, 1925
- Species Triceratium dictyotum P.A. Sims & R. Ross, 1990
- Species Triceratium digitale Brun, 1896
- Species Triceratium dignum Long, Fuge & Smith, 1946
- Species Triceratium disciforme Greville, 1863
- Species Triceratium discursum (Mann) VanLandingham, 1968 accepted as Biddulphia discursa Mann, 1925
- Species Triceratium dissimile Grunow in Schmidt et al., 1885
- Species Triceratium distictum J.W.Barker & S.H.Meakin, 1949
- Species Triceratium distinctum C.Janisch
- Species Triceratium distinguendum Pantocsek, 1892
- Species Triceratium diversum Hanna & Brigger, 1964
- Species Triceratium divisum Grunow in Van Heurck, 1883
- Species Triceratium dobreeanum G.Norman ex Greville, 1865
- Species Triceratium dubium Brightwell, 1859 accepted as Pseudictyota dubium (Brightwell) P.A. Sims & D. M. Williams in Sims et al., 2018
- Species Triceratium dulce Greville
- Species Triceratium duplicatum Schmidt in Schmidt et al., 1882
- Species Triceratium dutertrei Pantocsek & Tempère in Pantocsek, 1889 † accepted as Entogoniopsis dutertrei (Pantocsek & Tempère) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium dutertrei Pantocsek & Tempère in Brun et al., 1890 † accepted as Entogoniopsis dutertrei (Pantocsek & Tempère) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium eccentricum Grove & Sturt, 1887
- Species Triceratium edgari Hajós, 1974
- Species Triceratium ehrenbergii Grunow in Van Heurck, 1883
- Species Triceratium elaboratum Truan y Luard & Witt, 1888
- Species Triceratium elatum Pantocsek, 1892
- Species Triceratium elegans (Greville) Grunow
- Species Triceratium elegans A.M. Edwards in Stodder, 1861
- Species Triceratium elevatum Pantocsek, 1889
- Species Triceratium elongatum Grunow, 1867
- Species Triceratium endlicherii Pantocsek, 1892
- Species Triceratium epitheliale Witt in Schmidt et al., 1886
- Species Triceratium eulensteinii Grunow
- Species Triceratium exactum (Mann) F.W. Mills, 1935 accepted as Biddulphia exacta Mann, 1925
- Species Triceratium exactum (Mann) VanLandingham, 1968 accepted as Biddulphia exacta Mann, 1925
- Species Triceratium excavatum (Heiberg) Strelnikova, 1974 accepted as Trinacria excavata f. excavata Heiberg, 1863
- Species Triceratium excentricum Grove & Sturt, 1887
- Species Triceratium exiguum W.Smith, 1856
- Species Triceratium exornatum Greville
- Species Triceratium expressium Janisch in Schmidt et al., 1886
- Species Triceratium extuberans O'Meara, 1869
- Species Triceratium fabelliferum Barker & Meakin, 1945
- Species Triceratium falcatum (Boyer) VanLandingham, 1968 accepted as Biddulphia falcata Boyer, 1922
- Species Triceratium fallaciosum Grunow, 1889
- Species Triceratium fasciatum Pantocsek, 1889
- Species Triceratium favus Ehrenberg, 1839
- Species Triceratium febigeri W.C.Walker
- Species Triceratium fenestratum Witt, 1885
- Species Triceratium ferox Castracane, 1886
- Species Triceratium ferox Schmidt in Schmidt et al., 1886
- Species Triceratium figuratum R.K.Greville, 1865 † accepted as Trilamina figurata (R.K.Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium fimbriatum Wallich, 1858
- Species Triceratium finnmarchicum Grunow in Cleve & Grunow, 1880
- Species Triceratium firmum Greville, 1864
- Species Triceratium firthii Hanna & Brigger, 1964
- Species Triceratium fischeri Schmidt in Schmidt et al., 1882
- Species Triceratium flabelliferum Barker & Meakin, 1945
- Species Triceratium flexuosa
- Species Triceratium flexuosum Greville, 1862
- Species Triceratium flos Ehrenberg
- Species Triceratium formosum T.Brightwell, 1856 accepted as Trigonium formosum (Brightwell) Cleve, 1867
- Species Triceratium formosum Schmidt in Schmidt et al., 1882
- Species Triceratium forresterii Tempère in Bergon et al., 1890
- Species Triceratium forresterii F.S.C.Reed, 1946 † accepted as Entogoniopsis polycistinora (Pantocsek ex Tempère) N.I.Strelnikova, P.A.Sims, J.Witkowski & D.M.Williams, 2015 †
- Species Triceratium foseinoides Christian?, 1888
- Species Triceratium foveatum R.K.Greville, 1864 † accepted as Entogoniopsis foveata (R.K. Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium fractosum (Mann) VanLandingham, 1968 accepted as Biddulphia fractosa Mann, 1925
- Species Triceratium fractum Walker & Chase in Chase & Walker, 1887
- Species Triceratium fragile Pantocsek, 1892
- Species Triceratium frauenfeldii Grunow in Van Heurck, 1883
- Species Triceratium frickei (Van Heurck) VanLandingham, 1968 accepted as Biddulphia frickei Van Heurck, 1909
- Species Triceratium fulvum (Boyer) VanLandingham, 1968 accepted as Biddulphia fulva Boyer, 1922
- Species Triceratium gallapagense Cleve, 1881
- Species Triceratium geminum Schmidt in Schmidt et al., 1882
- Species Triceratium gemmatum A.P.Jousé, 1951 †
- Species Triceratium gibbosum Harvey & Bailey, 1854
- Species Triceratium giennense Azpeitia, 1911
- Species Triceratium giganteum Greville
- Species Triceratium glandarium Schmidt in Schmidt et al., 1888
- Species Triceratium glandiferum Grunow, 1888
- Species Triceratium globulifer J.Brun, 1891 † accepted as Entogoniopsis polycistinora (Pantocsek ex Tempère) N.I.Strelnikova, P.A.Sims, J.Witkowski & D.M.Williams, 2015 †
- Species Triceratium godeffroyi Grunow
- Species Triceratium godeffroyi sensu Truan & Witt, 1888
- Species Triceratium gombosii Fenner, 1991
- Species Triceratium gracile Hustedt in Schmidt et al., 1930
- Species Triceratium gracillimum Hustedt in Schmidt et al., 1959
- Species Triceratium graeffianum (Witt) M. Peragallo, 1897 accepted as Amphitetras graeffeiana Witt, 1873
- Species Triceratium grande T.Brightwell
- Variety Triceratium grande var. angulata Kitton in Schmidt et al., 1891
- Variety Triceratium grande var. grande Forti, 1912
- Variety Triceratium grande var. pentagona Grunow in Schmidt et al., 1885
- Variety Triceratium grande var. quadrangularis Forti in Tempère & Peragallo, 1910
- Variety Triceratium grande var. quadrangulata Tempère & Peragallo, 1909
- Variety Triceratium grande var. quadrata Tempère & Peragallo, 1912
- Variety Triceratium grande var. septangulata (Kitton) Schmidt in Schmidt et al., 1885 accepted as Triceratium favus var. septangulatum Kitton, 1874
- Forma Triceratium grande f. grande Brightwell, 1853
- Forma Triceratium grande f. pentagona Pantocsek, 1886
- Forma Triceratium grande f. quadrangularis (Forti)
- Forma Triceratium grande f. quadrata Forti, 1912
- Species Triceratium grande sensu Schmidt in Schmidt et al., 1885
- Species Triceratium grande sensu Truan & Witt, 1888
- Species Triceratium granulatum Walker & Chase in Chase & Walker, 1887
- Species Triceratium gratiosum Greville, 1861
- Species Triceratium gratum Schmidt in Schmidt et al., 1882
- Species Triceratium grave A. Schmidt, 1882 † accepted as Entogoniopsis tabellaria (T.Brightwell) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015
- Species Triceratium grayii Grove & Sturt ex Grunow, 1889
- Species Triceratium groningensis Reinhold, 1937
- Species Triceratium grovei
- Species Triceratium grundleri Schmidt in Schmidt et al., 1882
- Species Triceratium grundleri Schmidt in Schmidt et al., 1885
- Species Triceratium grunowianum Castracane, 1886
- Species Triceratium grunowii Janisch, 1885
- Species Triceratium guinense Leuduger-Fortmorel, 1898
- Species Triceratium gurowii Pantocsek, 1892
- Species Triceratium guttatum Cleve
- Species Triceratium haitianum Hustedt in Schmidt et al., 1959
- Species Triceratium hannaianum Hustedt in Schmidt et al., 1930 † accepted as Entogoniopsis hannaiana (F.Hustedt) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium hardmanianum Greville
- Species Triceratium hardmannianum †
- Species Triceratium harrisonianum G.Norman & Greville
- Species Triceratium harwoodii J.Witkowski, 2022 †
- Species Triceratium hebetatum (Grunow) Thum accepted as Triceratium irregulare var. hebetata Grunow in Van Heurck, 1883
- Species Triceratium heibergianum Grunow, 1866
- Species Triceratium heibergii Grunow
- Species Triceratium heilprinianum Kain & Schultze, 1889
- Species Triceratium heliaudi Tempere ex Peragallo & Peragallo, 1902
- Species Triceratium hertleini Hanna, 1927
- Species Triceratium heterogonium Barker & Meakin, 1946
- Species Triceratium heteroporum Grunow in Van Heurck, 1883
- Species Triceratium heterostictum Schmidt in Schmidt et al., 1890
- Species Triceratium hexagonalis (Boyer) VanLandingham, 1968 accepted as Biddulphia hexagonalis Boyer, 1922
- Species Triceratium hilaratum Pantocsek, 1892
- Species Triceratium hirsutum
- Species Triceratium horridum Brightwell, 1856
- Species Triceratium horridum Pantocsek
- Species Triceratium hungaricum Pantocsek, 1892
- Species Triceratium hyalinum Brightwell, 1858
- Species Triceratium hybridum
- Species Triceratium hystrix Pantocsek, 1889
- Species Triceratium idoneum Pantocsek, 1889
- Species Triceratium illustrum Pantocsek, 1892
- Species Triceratium impar Schmidt in Schmidt et al., 1890
- Species Triceratium imperator Truan y Luard & Witt, 1888
- Species Triceratium imperiale (Walker in Walker & Chase) M. Peragallo, 1897
- Species Triceratium implicatum Greville, 1865
- Species Triceratium impressum Grunow, 1883
- Species Triceratium inaequale Greville, 1864
- Species Triceratium incisum A.W.F.Schmidt
- Species Triceratium inconspicuum Greville, 1861 † accepted as Fenneria brachiata (T.Brightwell) J.Witkowski, 2018 †
- Species Triceratium incrassatum F.S.Castracane degli Antelminelli
- Species Triceratium indefinitum (Jousé) Strelnikova, 1974 accepted as Trinacria indefinita Jousé, 1951 †
- Species Triceratium indentatum Kain & Schultze, 1889
- Species Triceratium inelegans Greville
- Species Triceratium inflatum R.K.Greville, 1863 † accepted as Entogoniopsis inflata (Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium inglorium Greville, 1865
- Species Triceratium inopinata Greville, 1861
- Species Triceratium inornatum Greville
- Species Triceratium insigne
- Species Triceratium insuave A.Truan y Luard & O.N.Witt
- Species Triceratium insutum Castracane, 1886
- Species Triceratium interjectum A.W.F.Schmidt
- Species Triceratium intermedium Grove & Sturt, 1887
- Species Triceratium interpunctatum Grunow in Schmidt et al., 1882
- Species Triceratium interruptum Bailey Collection
- Species Triceratium intricatum T.West, 1860
- Species Triceratium inversum (Mann) VanLandingham, 1968 accepted as Biddulphia inversa ‘Mann' Mills, 1925
- Species Triceratium irregulare Greville, 1864 accepted as Eurossia irregularis (R.K.Greville) P.A.Sims, 1993 †
- Species Triceratium ischaboense Hustedt, 1930
- Species Triceratium janischii Truan y Luard & Witt, 1888
- Species Triceratium japonicum Schmidt in Schmidt et al., 1885
- Species Triceratium javanicum Cleve, 1881
- Species Triceratium jensenianum Grunow, 1866
- Species Triceratium jeremianum Schmidt in Schmidt et al., 1882
- Species Triceratium jimboi Pantocsek, 1892
- Species Triceratium johnsoni Ralfs in Pritchard, 1861
- Species Triceratium jordani Truan y Luard & Witt, 1888
- Species Triceratium jucatense Grunow in Schmidt et al., 1882
- Species Triceratium jucundum Pantocsek, 1892
- Species Triceratium junctum A.W.F.Schmidt, 1886 accepted as Biddulphia juncta (A.Schmidt) A.Mann, 1925
- Species Triceratium kainii E.A.Schultze in Kain & Schultze, 1889 †
- Species Triceratium kanayae J.Fenner, 1984 † accepted as Fenneria kanayae (J.Fenner) J.Witkowski, 2018 †
- Species Triceratium kennetti Hajós & Stradner in Hajós, 1974
- Species Triceratium kidstonii Pantocsek, 1889
- Species Triceratium kinkeri Schmidt in Schmidt et al., 1886
- Species Triceratium kinkerianum Witt, 1885
- Species Triceratium kinkerianum J.-J.Brun
- Species Triceratium kinkerianum Grove & Sturt, 1886
- Species Triceratium kittonianum Greville, 1865
- Species Triceratium kolbei F.Hustedt
- Species Triceratium kuepperi Hajós & Stradner in Hajós, 1974
- Species Triceratium kusnetzkianum Pantocsek, 1889
- Species Triceratium labyrinthaeum Greville, 1861
- Species Triceratium laetum Pantocsek, 1886
- Species Triceratium laeve
- Species Triceratium laevepunctatum Witt, 1873
- Species Triceratium lahusenii J.Pantocsek, 1889 † accepted as Entogoniopsis lahusenii (J.Pantocsek) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium lanceolatum Pantocsek, 1889
- Species Triceratium latipes Fenner in Schrader & Fenner, 1976
- Species Triceratium latum Greville
- Species Triceratium latum sensu Pantocsek, 1886
- Species Triceratium lautourianum Grove in Bergon et al., 1890
- Species Triceratium lautum Greville, 1866
- Species Triceratium leudugeri
- Species Triceratium leudugerii
- Species Triceratium levis
- Species Triceratium ligulatum Greville, 1864
- Species Triceratium lineatum Greville
- Species Triceratium lineolatum R.K.Greville, 1863 † accepted as Entogoniopsis lineolata (R.K.Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium lingulatum Greville, 1864
- Species Triceratium lobatogemmatum J.-J.Brun, 1896 † accepted as Entogoniopsis foveata (R.K. Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium lobatum R.K.Greville, 1863 † accepted as Trilamina lobata (R.K.Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium loczyi
- Species Triceratium lucidum Pantocsek, 1886
- Species Triceratium luculentum Hustedt in Schmidt et al., 1959
- Species Triceratium luminosum Tempère & Brun in Brun & Tempère, 1889
- Species Triceratium lunatum Long, Fuge & Smith, 1946
- Species Triceratium lustratum Long, Fuge & Smith, 1946
- Species Triceratium macroporum Hajós, 1968
- Species Triceratium maculatum Kitton, 1871
- Species Triceratium madagascarense Grunow in Van Heurck, 1883
- Species Triceratium majus (E.Grove & G.Sturt) A.Grunow, 1888 † accepted as Entogoniopsis major J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium malleus Brightwell, 1858 accepted as Bellerochea malleus (Brightwell) Van Heurck, 1885
- Species Triceratium mamillanum Debes ex Hustedt in Schmidt et al., 1959
- Species Triceratium mammiferum Grunow
- Species Triceratium mammosum Greville, 1866
- Species Triceratium margaritaceum Ralfs in Pritchard, 1861
- Species Triceratium margaritiferum Cleve, 1881
- Species Triceratium marginatum Brightwell, 1856
- Species Triceratium marylandicum Brightwell, 1856
- Species Triceratium mediterraneum Pantocsek, 1908
- Species Triceratium megaporus (Ehrenberg) M. Peragallo, 1903 accepted as Coscinodiscus megaporus Ehrenberg, 1861
- Species Triceratium megastomum Ehrenberg
- Species Triceratium megastomum sensu Brightwell, 1853
- Species Triceratium membranaceum Brightwell, 1853
- Species Triceratium membranaceum (Cleve)
- Species Triceratium mereskovskii Pantocsek, 1889
- Species Triceratium mesoleium Grunow in Van Heurck, 1883
- Species Triceratium microcephalum Greville, 1861
- Species Triceratium microporum Ehrenberg, 1875
- Species Triceratium microstictum Greville, 1864
- Species Triceratium microstigma Ehrenberg
- Species Triceratium microtis
- Species Triceratium minusculum Grunow in Cleve & Möller, 1879
- Species Triceratium minutissima (Greville) F.W. Mills, 1934 accepted as Biddulphia minutissima Greville, 1886
- Species Triceratium minutum Walker & Chase in Chase & Walker, 1887
- Species Triceratium mirabile Jouse in Proschkina-Lavrenko, 1949
- Species Triceratium mirificum Brun, 1896
- Species Triceratium modestum Greville, 1862
- Species Triceratium moelleri Pantocsek, 1886
- Species Triceratium montereyi
- Species Triceratium montereyii T.Brightwell, 1853 †
- Species Triceratium morenoense Barker & Meakin, 1949
- Species Triceratium morlandii E.Grove & G.Sturt, 1887 † accepted as Entogoniopsis morlandii (Grove & Sturt) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium moronense Greville
- Species Triceratium morsianum Tempere ex F. W. Mills, 1935
- Species Triceratium mucronatum Schmidt in Schmidt et al., 1886
- Species Triceratium multifrons J.-J.Brun
- Species Triceratium multiplex C.Janisch
- Species Triceratium muricatum Brightwell, 1853
- Species Triceratium nancoorense Grunow
- Species Triceratium nebulosum Greville, 1861
- Species Triceratium nebulosum Ehrenberg, 1872
- Species Triceratium needhami Hanna & Brigger, 1964
- Species Triceratium neglectum Greville, 1865
- Species Triceratium nervosum Pavillard, 1930
- Species Triceratium nicobaricum Grunow in Schmidt et al., 1882
- Species Triceratium nitescens R.K.Greville, 1865 † accepted as Trilamina nitescens (R.K.Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium nitidum Greville, 1861
- Species Triceratium nobile Witt, 1885
- Species Triceratium nobile (Greville) Cleve, 1885 accepted as Amphitetras nobilis Greville, 1865
- Species Triceratium normanianum Greville
- Species Triceratium notabilis Greville, 1861
- Species Triceratium notabilis Korotkevicz, 1964
- Species Triceratium notatum Pantocsek, 1892
- Species Triceratium nova zealandicum (Grove & Sturt) Grunow, 1888 accepted as Triceratium dobreeanum var. novazealandica Grove & Sturt, 1886 †
- Species Triceratium novae seelandiae (Grove & Sturt) Schmidt, 1888 accepted as Triceratium dobreeanum var. novazealandica Grove & Sturt, 1886 †
- Species Triceratium nudum Pantocsek, 1886
- Species Triceratium oamaruense E.Grove & G.Sturt † accepted as Entogoniopsis oamaruense (E.Grove & G.Sturt) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium obesum R.K.Greville, 1864 † accepted as Trilamina obesa (R.K.Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium obliquum Grunow in Van Heurck, 1883
- Species Triceratium obscurum Greville accepted as Azpeitia obscura (Greville) P.A. Sims in Williams, 1988
- Species Triceratium obtusangulum Hustedt in Schmidt et al., 1959
- Species Triceratium obtusum Ehrenberg, 1844
- Species Triceratium obtusum K.G.Shibkova, 1959
- Species Triceratium obtusum sensu Brightwell, 1853
- Species Triceratium occultum Hustedt in Schmidt et al., 1930
- Species Triceratium ocellatum Ehrenberg, 1845
- Species Triceratium oculatum Greville
- Species Triceratium officiosum Hustedt in Schmidt et al., 1959
- Species Triceratium orbiculatum Schibkova in Krotov & Schibkova, 1959
- Species Triceratium orbiculatum sensu Brightwell, 1856
- Species Triceratium orientale Harvey & Bailey, 1853
- Species Triceratium ornatum Greville
- Species Triceratium pallidum R.K.Greville, 1864 † accepted as Entogoniopsis tabellaria (T.Brightwell) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015
- Species Triceratium pantocsekii
- Species Triceratium papillatum E.Grove & G.Sturt
- Species Triceratium papillatum Kitton in A. Schmist, 1891
- Species Triceratium parallelum (Ehrenb.) Grev., 1865
- Species Triceratium parallum Christian?, 1888
- Species Triceratium pardus Schmidt in Schmidt et al., 1882
- Species Triceratium parma J.W. Bailey ex H.L. Smith, 1872
- Species Triceratium parmula Brightwell, 1856
- Species Triceratium partitum Greville, 1864
- Species Triceratium parvulum (Janisch & Rabenhorst)
- Species Triceratium parvulum (Greville) M. Peragallo accepted as Amphitetras parvula Greville, 1863
- Species Triceratium patagonicum A.Schmidt, 1885
- Species Triceratium pauperculum Greville, 1865
- Species Triceratium pavimentosum Castracane, 1886
- Species Triceratium pectinatum Greville, 1862
- Species Triceratium pelagicum (J.L.B.Schröder) Sournia, 1968 accepted as Biddulphia pelagica J.L.B.Schröder, 1908
- Species Triceratium pellucida (Castracane) Guo, Ye & Zhou, 1982 accepted as Biddulphia pellucida Castracane, 1886
- Species Triceratium pentacrinus (Ehrenberg) Wallich, 1858
- Species Triceratium peragalli
- Species Triceratium peragallii
- Species Triceratium peragalloii Pantocsek, 1889
- Species Triceratium permagnum Janisch, 1888
- Species Triceratium perminutum Greville, 1864
- Species Triceratium perpendiculare Lin & Chin, 1980
- Species Triceratium perplexum Long, Fuge & Smith, 1946
- Species Triceratium perpusillium Greville, 1864
- Species Triceratium perryanum Truan y Luard & Witt, 1888
- Species Triceratium pethoei Pantocsek, 1889
- Species Triceratium petitianum Leuduger-Fortmorel, 1898
- Species Triceratium petitii Pantocsek, 1889
- Species Triceratium picturatum R.K.Greville, 1866 † accepted as Entogoniopsis foveata (R.K. Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium pileatum Grunow in Van Heurck, 1883
- Species Triceratium pileolus C.G.Ehrenberg, 1844 † accepted as Trinacria pileolus (C.G.Ehrenberg) A.Grunow, 1884 †
- Species Triceratium pileus Ehrenberg
- Species Triceratium planoconcavum
- Species Triceratium planum Strelnikova, 1974
- Species Triceratium plenum Grove & Sturt in Grunow, 1889
- Species Triceratium plicatum Grunow
- Species Triceratium plumosum Greville, 1864
- Species Triceratium polycistinorum J.Pantocsek ex J.Tempère, 1892 † accepted as Entogoniopsis polycistinora (Pantocsek ex Tempère) N.I.Strelnikova, P.A.Sims, J.Witkowski & D.M.Williams, 2015 †
- Species Triceratium polycystinorum sensu Krotov & Schibkova, 1959
- Species Triceratium polygibbum Pantocsek, 1886
- Species Triceratium polygonium Greville, 1865
- Species Triceratium polymorphus Harwood & Maruyama, 1992
- Species Triceratium ponderosum Edwards, 1873
- Species Triceratium portuosum Janisch in Schmidt et al., 1885
- Species Triceratium praeferox Pantocsek, 1892
- Species Triceratium praetenue R.K.Greville, 1864 †
- Species Triceratium praeturgidum Schibkova in Krotov & Schibkova, 1959
- Species Triceratium productissimum Bergon ex Bergon et al., 1890
- Species Triceratium productum R.K.Greville, 1861 † accepted as Entogoniopsis truncata (T.Brightwell) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium prominens Greville, 1863
- Species Triceratium proprium Pantocsek, 1892
- Species Triceratium protractum Pantocsek, 1889
- Species Triceratium pruninosum Long, Fuge & Smith, 1946
- Species Triceratium pseudoarcticum Pantocsek, 1892
- Species Triceratium pseudonervatum E.Grove & G.Sturt, 1887 accepted as Entogoniopsis pseudonervata (E.Grove & G.Sturt) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium pseudotrisulcatum Hustedt, 1935
- Species Triceratium pulchellum Grunow
- Species Triceratium pulcherrimum Greville, 1861
- Species Triceratium pulchrum Hustedt in Schmidt et al., 1959
- Species Triceratium pulvillus Castracane, 1886
- Species Triceratium pulvinar Schmidt in Schmidt et al., 1888
- Species Triceratium punctatolineatum Schmidt in Schmidt et al., 1890
- Species Triceratium punctatum Brightwell, 1856
- Species Triceratium punctatum (Greville)
- Species Triceratium punctatum Wallich, 1860
- Species Triceratium punctigerum Castracane, 1886
- Species Triceratium punctulata Tempère & Peragallo, 1908
- Species Triceratium quadrangulare Greville, 1865
- Species Triceratium quadratum R.K.Greville, 1865 † accepted as Entogoniopsis lineolata (R.K.Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium quadricorne Greville, 1865
- Species Triceratium quadrinotatum Schmidt in Schmidt et al., 1890 accepted as Amphitetras quadrinotatum (Ehrenberg, Schmidt) Prema, P. & T. V. Desikachary, 2012 †
- Species Triceratium quinquefolium Leuduger-Fortmorel, 1898
- Species Triceratium quinqueguttatum Grunow in Van Heurck, 1883
- Species Triceratium quinquelobatum Greville, 1866
- Species Triceratium radfordianum (Castracane) F.W. Mills, 1935 accepted as Stictodiscus radfordianus Castracane, 1886
- Species Triceratium radians J.A.Tempère & J.-J.Brun
- Species Triceratium radiatopunctatum
- Species Triceratium radiatum T.Brightwell † accepted as Crawfordia radiata (Brightwell) P.A.Sims, J.Witkowski, E.A.César †
- Species Triceratium radiatum (Greville) M. Peragallo, 1897 accepted as Amphitetras radiata Greville, 1862
- Species Triceratium radiolatum Janisch in Schmidt et al., 1890
- Species Triceratium radio-punctatum
- Species Triceratium radiosoreticulatum Grunow in Van Heurck, 1883
- Species Triceratium rattrayii Pantocsek, 1889
- Species Triceratium receptum Schmidt in Schmidt et al., 1885
- Species Triceratium rectangulare Grove & Sturt, 1887
- Species Triceratium reedii T.V.Desikachary & P.M.Sreelatha, 1989 † accepted as Entogoniopsis polycistinora (Pantocsek ex Tempère) N.I.Strelnikova, P.A.Sims, J.Witkowski & D.M.Williams, 2015 †
- Species Triceratium regina Wolle, 1890
- Species Triceratium regina Ehrenberg ex M. Peragallo, 1903
- Species Triceratium renunciatum Pantocsek, 1889
- Species Triceratium repletum Greville
- Species Triceratium reticulatum Greville, 1865
- Species Triceratium reticulum Ehrenberg, 1844
- Species Triceratium reticulum Weisse, 1854
- Species Triceratium riedyi (G D.Hanna & W.M.Grant) T.Reinhold, 1937 accepted as Entogoniopsis tabellaria (T.Brightwell) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015
- Species Triceratium rivale Schmidt in Schmidt et al., 1885
- Species Triceratium robertsiana
- Species Triceratium robertsianum Greville
- Species Triceratium robertsianum Stokes ex O'Meara, 1869
- Species Triceratium robustum Greville, 1861
- Species Triceratium rogosum Grove & Sturt, 1887
- Species Triceratium roperianum Greville, 1862
- Species Triceratium rostratum Petit, 1881
- Species Triceratium rotifer Leuduger-Fortmorel, 1879
- Species Triceratium rotundatum R.K.Greville, 1861 †
- Species Triceratium rudis (Mann) VanLandingham, 1968 accepted as Biddulphia rudis Mann, 1925
- Species Triceratium rugosum E.Grove & G.Sturt, 1887 †
- Species Triceratium russlandicum Tempère, 1890
- Species Triceratium rusticum (Mann) F.W. Mills, 1935 accepted as Trigonium rusticum Mann, 1907
- Species Triceratium rylandsianum Greville, 1864
- Species Triceratium rzehakii Pantocsek, 1889
- Species Triceratium saliens
- Species Triceratium sanctaehelenae Heiden & Kolbe, 1928
- Species Triceratium sanpedroana (Mereschkowsky) F.W. Mills, 1935 accepted as Biddulphia sanpedroana Mereschkowsky, 1900
- Species Triceratium saratovianum Pantocsek, 1889 † accepted as Entogoniopsis saratoviana (J.Pantocsek) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium sarcophagus Castracane, 1886
- Species Triceratium sarmaticum Pantocsek, 1889
- Species Triceratium schlumbergeri Tempère & Brun in Brun & Tempère, 1889
- Species Triceratium schmidtii Anissimova ex Proschkina-Lavrenko, 1949
- Species Triceratium schulzii Jousé, 1949
- Species Triceratium scitulum T.Brightwell
- Species Triceratium scitulum sensu Schmidt in Schmidt et al., 1885
- Species Triceratium scopus Brun, 1896
- Species Triceratium sculptum Shadbolt, 1854 accepted as Biddulphia sculpta (Shadbolt) Van Heurck, 1885
- Species Triceratium scutum M. Peragallo, 1903
- Species Triceratium secedens Schmidt in Schmidt et al., 1888
- Species Triceratium secernendum Schmidt in Schmidt et al., 1882
- Species Triceratium semicirculare Brightwell accepted as Euodiella semicircularis (Brightwell) P.A.Sims, 2000 †
- Species Triceratium semseyi Pantocsek, 1889
- Species Triceratium sendaiense A.W.F.Schmidt
- Species Triceratium sentum Witt
- Species Triceratium separatum Schmidt in Schmidt et al., 1882
- Species Triceratium septangulatum (Kitton) H.L. Smith, 1874-1879 accepted as Triceratium favus var. septangulatum Kitton, 1874
- Species Triceratium septum Pantocsek, 1889
- Species Triceratium serratum Wallich, 1858
- Species Triceratium setigerum J.W.Bailey, 1854
- Species Triceratium sexangulatum Greville, 1865
- Species Triceratium sexpartitum Grove & Sturt, 1887
- Species Triceratium seychellense Grunow in Van Heurck, 1883
- Species Triceratium seychellense sensu Forti, 1910
- Species Triceratium shadbodtianum
- Species Triceratium shadboldtianum
- Species Triceratium shadboltianum R.K. Greville, 1862 accepted as Lampriscus shadboldtianum (Greville) H.Peragallo & M.Peragallo, 1902
- Species Triceratium shadboltii L.W. Bailey, 1861
- Species Triceratium sibiricum Jousé, 1955
- Species Triceratium sidereum Schmidt in Schmidt et al., 1890
- Species Triceratium simile Hustedt in Schmidt et al., 1959
- Species Triceratium simplex Brun in Brun & Tempère, 1889
- Species Triceratium simplicissimum Witt, 1885
- Species Triceratium sinense Schwarz, 1874
- Species Triceratium smithianum Greville, 1864
- Species Triceratium smithii Pantocsek, 1889
- Species Triceratium sokolowii Pantocsek, 1892
- Species Triceratium sol Grunow, 1883 accepted as Ditylum sol (Grunow) De Toni, 1894
- Species Triceratium sol A. Schmidt, 1890
- Species Triceratium sol Cleve & Möller, 1878
- Species Triceratium solenoceros Ehrenberg
- Species Triceratium sollemne Jousé, 1955
- Species Triceratium sparsimpunctata Jousé in Proschkina-Lavrenko, 1949
- Species Triceratium sparsipunctatum Hustedt in Schmidt et al., 1959
- Species Triceratium speciosum Pantocsek, 1892
- Species Triceratium spectabile Weisse, 1867
- Species Triceratium spinosum J.W.Bailey, 1844 accepted as Biddulphia spinosa (J.W.Bailey) Boyer, 1927
- Species Triceratium spinulosum Grunow in Schmidt et al., 1885
- Species Triceratium splendidum Hustedt in Schmidt et al., 1959
- Species Triceratium squamatum J.Pantocsek, 1889 † accepted as Entogoniopsis squamata (J.Pantocsek) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium squamiferum Pantocsek ex Tempère, 1891
- Species Triceratium st. helenae
- Species Triceratium staubii Pantocsek, 1892
- Species Triceratium stellatum Meister, 1934 (1935)
- Species Triceratium stigmaticum Pantocsek, 1892
- Species Triceratium stokesianum R.K.Greville, 1866 † accepted as Entogoniopsis stokesiana (R.K.Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium stolterfothii Truan y Luard & Witt, 1888
- Species Triceratium strabo Schmidt in Schmidt et al., 1885
- Species Triceratium striolatum Ehrenberg, 1840
- Species Triceratium striolatum W. Smith, 1853
- Species Triceratium striolatum sensu Brightwell, 1853
- Species Triceratium striolatum sensu Roper, 1854
- Species Triceratium sturtii Pantocsek, 1886
- Species Triceratium subcapitatum Pantocsek, 1889
- Species Triceratium subcornutum Grunow in Schmidt et al., 1886
- Species Triceratium sublime Schmidt in Schmidt et al., 1886
- Species Triceratium subofficiosum Hustedt in Schmidt et al., 1959
- Species Triceratium suborbiculare Pantocsek
- Species Triceratium suborbicularis
- Species Triceratium subquadrangulare Hustedt in Schmidt et al., 1959
- Species Triceratium subradiatum Grunow in Cleve & Möller, 1879
- Species Triceratium subrotundatum A.W.F.Schmidt accepted as Amphitetras subrotundata Janisch in Schmidt et al., 1886
- Species Triceratium subrotundatum sensu Forti, 1912
- Species Triceratium subundosum Hustedt, 1930 † accepted as Sheshukovia subundosa (Hustedt) Z.I.Gleser, 1984 †
- Species Triceratium subvenosum F. Hustedt in Wetzel, 1935 † accepted as Entogoniopsis polycistinora (Pantocsek ex Tempère) N.I.Strelnikova, P.A.Sims, J.Witkowski & D.M.Williams, 2015 †
- Species Triceratium succinctum Truan & Witt, 1888
- Species Triceratium sundbyense Hustedt ex R.Simonsen, 1987 †
- Species Triceratium swastika Long, Fuge & Smith, 1946
- Species Triceratium synicum N.I.Strelnikova, 1965 †
- Species Triceratium szakalense Pantocsek, 1886
- Species Triceratium tabellarium T.Brightwell, 1856 accepted as Entogoniopsis tabellaria (T.Brightwell) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015
- Species Triceratium taeniatum Hustedt in Schmidt et al., 1959
- Species Triceratium tahitiense Castracane, 1886
- Species Triceratium tambovicum A.P.Jousé in T.F.Kozyrenko, A.P.Jousé & O.G.Kozlova, 1977 † accepted as Jouserella tambovica (A.P.Jousé in T.F.Kozyrenko et al.) T.F.Kozyrenko in T.F.Kozyrenko & N.I.Strelnikova, 2012 †
- Species Triceratium tectum Pantocsek, 1892
- Species Triceratium temperei Brun in Brun, Bergon et al., 1890
- Species Triceratium tertiarium Pantocsek, 1889
- Species Triceratium tessela (Krotov) Strelnikova, 1974 accepted as Trinacria tessela Krotov, 1959 †
- Species Triceratium tessellatum Greville, 1861
- Species Triceratium testudo J.-J.Brun accepted as Tabulina testudo Brun in Brun & Tempère, 1889 †
- Species Triceratium tetragonum Pantocsek, 1889
- Species Triceratium thaitiense Castracane, 1886 accepted as Triceratium tahitiense Castracane, 1886
- Species Triceratium thumii A.W.F.Schmidt
- Species Triceratium thumii J.D. Moller, 1892
- Species Triceratium thwaitesianum Greville, 1862
- Species Triceratium transylvanica Pantocsek ex F. W. Mills, 1935
- Species Triceratium triascium Pantocsek, 1889
- Species Triceratium tridactylum Brightwell, 1853 accepted as Triceratium spinosum J.W.Bailey, 1844
- Species Triceratium trifoliatum Cleve, 1881 †
- Species Triceratium trifoliatum Barker & Meakin, 1945
- Species Triceratium trifolium Schmidt in Schmidt et al., 1882
- Species Triceratium trilineatum Greville, 1865
- Species Triceratium trilingulatum T.Brightwell accepted as Actinocyclus trilingulatus Brightwell, 1860
- Species Triceratium trinitas J.-J.Brun
- Species Triceratium triorbicum Schmidt in Schmidt et al., 1888
- Species Triceratium tripartitum Grunow accepted as Biddulphia tripartita (Grunow) Van Heurck
- Species Triceratium tripecten J.-J.Brun
- Species Triceratium tripes J.Brun, 1896 † accepted as Trilamina tripes (J.Brun) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium triplex Brun, 1896
- Species Triceratium tripolaris Tempère & Brun, 1889
- Species Triceratium tripos Cleve
- Species Triceratium trisinum (Mann) VanLandingham, 1968
- Species Triceratium trisulcum Bailey
- Species Triceratium trisulcum sensu Krotov & Schibkova, 1959
- Species Triceratium trisulcum sensu Schmidt in Schmidt et al., 1886
- Species Triceratium truanii Pantocsek, 1889
- Species Triceratium truncatum T.Brightwell, 1856 † accepted as Entogoniopsis truncata (T.Brightwell) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium truncatum Brun in Brun & Tempère, 1889
- Species Triceratium tschestnovii (J.Pantocsek) J.Pantocsek ex J.Tempère, 1891 † accepted as Entogoniopsis squamata (J.Pantocsek) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium tulkii Tempère in Bergon et al., 1890
- Species Triceratium tumescens Castracane, 1886
- Species Triceratium tumidum Greville
- Species Triceratium turgidulum Hustedt in Schmidt et al., 1959
- Species Triceratium turgidum Schmidt in Schmidt et al., 1882
- Species Triceratium turgidum Cleve, 1885
- Species Triceratium turriferum Truan y Luard & Witt, 1888
- Species Triceratium turrigerum (Mann) VanLandingham, 1968 accepted as Biddulphia turrigera Mann, 1925
- Species Triceratium udiensis Hustedt in Schmidt et al., 1959
- Species Triceratium umbilicatum Ralfs in Pritchard, 1861
- Species Triceratium uncinatum Schmidt in Schmidt et al., 1886
- Species Triceratium undatum A.M. Edwards in Stodder, 1861
- Species Triceratium undatum Grunow, 1887
- Species Triceratium undatum Pantocsek, 1889
- Species Triceratium undosum Pantocsek, 1889
- Species Triceratium undulans Barker & Meakin, 1946
- Species Triceratium undulatum Brightwell, 1858
- Species Triceratium undulatum Weisse, 1854
- Species Triceratium undulatum W. Smith, 1853
- Species Triceratium undum Euler
- Species Triceratium unguiculatum Greville, 1864
- Species Triceratium uralense N.I.Strelnikova, 1965 †
- Species Triceratium uviferum A.W.F.Schmidt, 1885 † accepted as Entogoniopsis foveata (R.K. Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium validum Grunow
- Species Triceratium variabile Brightw., 1856
- Species Triceratium variable Brightwell, 1856
- Species Triceratium varians F.Hustedt in A.Schmidt et al., 1930 † accepted as Entogoniopsis varians (F.Hustedt in A.Schmidt et al.) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium variegatum Greville, 1861
- Species Triceratium vastum Pantocsek, 1892
- Species Triceratium vates Pantocsek, 1892
- Species Triceratium venosum T.Brightwell, 1856 † accepted as Entogoniopsis venosa (Brightwell) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium ventriculosum Schmidt in Schmidt et al., 1886
- Species Triceratium venulosum Greville
- Species Triceratium venustum Witt, 1885
- Species Triceratium verecundum Hustedt in Schmidt et al., 1959
- Species Triceratium versicolor
- Species Triceratium veterarium Hustedt in Schmidt et al., 1959
- Species Triceratium vetustum Hustedt in Schmidt et al., 1959
- Species Triceratium vittatum Pantocsek, 1889
- Species Triceratium wallichii Ralfs in Pritchard, 1861
- Species Triceratium websteri Tempère in Bergon et al., 1890
- Species Triceratium weissei Grunow ex Witt, 1885 †
- Species Triceratium weisseianum Pantocsek, 1889
- Species Triceratium weissflogii Walker & Chase in Chase & Walker, 1887
- Species Triceratium weissflogii Grove & Sturt, 1887
- Species Triceratium weissii Grunow ex O. Witt, 1885
- Species Triceratium weissii Grunow in A.Schmidt, 1886 † accepted as Medlinia weissei (Grunow in A.Schmidt) P.A.Sims, 1998 †
- Species Triceratium westianum Greville, 1861 † accepted as Trilamina westiana (R.K.Greville) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium wettsteinii Pantocsek, 1910
- Species Triceratium wettsteinii Pantocsek, 1908
- Species Triceratium wetzelii Hustedt ex Wetzel, 1935
- Species Triceratium whampoense A.F.Schwarz, 1874
- Species Triceratium wilkesii Harvey & J.W. Bailey, 1853 (1854)
- Species Triceratium witti
- Species Triceratium wittianum A.Truan in A.Truan & O.N.Witt, 1888 accepted as Trilamina wittiana (A.Truan in A.Truan & O.N.Witt) J.Witkowski, P.A.Sims, N.I.Strelnikova & D.M.Williams, 2015 †
- Species Triceratium wittii A.W.F.Schmidt
- Species Triceratium zonatulatum Greville
- Species Triceratium zonatum Greville, 1864
- Species Triceratium zonulatum Greville
- Genus Trieres M.P.Ashworth & E.C.Theriot, 2013
- Superorder Chaetocerotanae (95)
- Superorder Corethranae (1)
- Superorder Coscinodiscanae (300)
- Superorder Cymatosirophycanae (10)
- Superorder Lithodesmiophycanae (7)
- Superorder Rhizosolenianae (37)
- Superorder Thalassiosiranae (192)
- Order Arcanodiscales (5)
- Order Stictocyclales
- Subclass Fragilariophycidae (483)
- Order Centrales
