• Triceratium Ehrenberg, 1839
• Triceratium abercrombieanum Greville
• Triceratium abyssale F.S. Castracane degli Antelminelli
• Triceratium abyssorum Grunow
• Triceratium acceptum Greville
• Triceratium aculeatum Ehrenberg
• Triceratium aculeatum Greville
• Triceratium aculeatum K.G. Shibkova
• Triceratium acutangulum Grunow
• Triceratium acutangulum N.I. Strelnikova
• Triceratium acutum Ehrenberg
• Triceratium admirabile Debes
• Triceratium adspersum A.W.F. Schmidt
• Triceratium affina Grunow
• Triceratium africanum Ehrenberg
• Triceratium agnellus A.I. Krotov
• Triceratium albifrons J.-J. Brun
• Triceratium album J.A. Long, D.P. Fuge & J. Smith
• Triceratium altar J.-J. Brun
• Triceratium alternans J.W. Bailey, 1851 accepted as Biddulphia alternans (J.W. Bailey) Van Heurck, 1885
• Triceratium alveolatum P. Bergon
• Triceratium amblyoceros Ehrenberg
• Triceratium americana J. Ralfs
• Triceratium americanum (Bailey) Cleve-Euler
• Triceratium amoenum Greville
• Triceratium amplexum A.W.F. Schmidt
• Triceratium ananinense Pantocsek
• Triceratium anderssonii Cleve
• Triceratium anissimovae (A.P. Jousé) N.I. Strelnikova
• Triceratium annulatum Wallich
• Triceratium anostomosans E. Grove
• Triceratium antarcticum C. Janisch
• Triceratium antarcticum Cleve
• Triceratium antediluvianum (Ehrenberg) Grunow, 1867 accepted as Biddulphia antediluviana (Ehrenberg) Van Heurck, 1885
• Triceratium antillarum Cleve
• Triceratium antipodum Pantocsek
• Triceratium antiquum Pantocsek
• Triceratium approximatum Greville
• Triceratium araneosum Greville
• Triceratium archangelskianum O.N. Witt
• Triceratium arcticum Brightwell, 1853 accepted as Trigonium arcticum (Brightwell) Cleve, 1868
• Triceratium arcuatum G. Shadbolt
• Triceratium areolatum Greville
• Triceratium areolatum P. Harting
• Triceratium argus C. Janisch
• Triceratium arietinum A.W.F. Schmidt
• Triceratium armasevskii Pantocsek
• Triceratium armatum Roper, 1854 accepted as Triceratium spinosum J.W. Bailey, 1844 accepted as Biddulphia spinosa (J.W. Bailey) Boyer, 1927
• Triceratium arrogans A. Truan y Luard & O.N. Witt
• Triceratium ascensionis G. Leuduger-Fortmorel
• Triceratium atlanticum F.S. Castracane degli Antelminelli
• Triceratium atomus Greville
• Triceratium attenuatum Greville
• Triceratium auliscoides E. Grove & G. Sturt
• Triceratium balaena
• Triceratium balaniferum J.A. Tempère & J.-J. Brun
• Triceratium balearicum Cleve, 1881
• Triceratium barbadense Greville
• Triceratium basilica J.-J. Brun
• Triceratium bellum J.A. Long, D.P. Fuge & J. Smith
• Triceratium bergonii Tempère & Brun, 1889 †
• Triceratium bicorne Cleve
• Triceratium bicornigerum G.D. Hanna
• Triceratium biddulphia P.A.C. Heiberg
• Triceratium biforme F. Hustedt
• Triceratium biharense Pantocsek
• Triceratium bimarginatum E. Grove & G. Sturt
• Triceratium biquadratum C. Janisch in Schmidt et al., 1886
• Triceratium bireticulatum J.W. Barker & S.H. Meakin
• Triceratium blanditum Greville
• Triceratium blandum O.N. Witt
• Triceratium bowerbankiana J. Ralfs
• Triceratium brachiatum T. Brightwell
• Triceratium brachiolatum T. Brightwell
• Triceratium brandtii Pantocsek
• Triceratium brevinervum Greville
• Triceratium brightwelli T. West
• Triceratium brightwellii T. West, 1860 accepted as Ditylum brightwellii (T. West) Grunow, 1885
• Triceratium broeckii G. Leuduger-Fortmorel, 1879
• Triceratium browneanum Greville
• Triceratium brunii Pantocsek
• Triceratium bullatum E. Grove
• Triceratium bullosum O.N. Witt
• Triceratium caducum Pantocsek
• Triceratium calvescens F.S. Castracane degli Antelminelli
• Triceratium cambroneroi F. Azpeitia Moros
• Triceratium campeachianum Grunow
• Triceratium campechianum Grunow accepted as Planothidium campechianum (Hustedt) Witkowski & H. Lange-Bertalot
• Triceratium canalifer J.-J. Brun
• Triceratium cancellatum Greville
• Triceratium capitatum J. Ralfs ex Greville
• Triceratium capitiferum F. Hustedt
• Triceratium caribaeum W.C. Walker & H.H. Chase
• Triceratium carinatum Ehrenberg
• Triceratium cariosum F.S. Castracane degli Antelminelli
• Triceratium castellatum T. West
• Triceratium castelliferum Grunow, 1888
• Triceratium castracanei Pantocsek
• Triceratium caudatum Witt
• Triceratium celebense A.W.F. Schmidt