| Ceratiaceae Kof., 1907 |
| Ceratium Schrank, 1793 |
| Ceratium arietinum Cleve, 1900 |
| Ceratium arietinum subsp. bucephalum (Cleve, 1897) H.W. Graham & Bronik., 1944 |
| Ceratium arietinum subsp. gracilentum (Jørg.) H.W. Graham & Bronik., 1944 |
| Ceratium arietinum var. bucephalum (Cleve) Sournia, 1966 |
| Ceratium arietinum var. gracilentum (Jørg.) Sournia, 1966 |
| Ceratium axiale Kof., 1907 |
| Ceratium azoricum Cleve, 1900 |
| Ceratium balechii Meave del Castillo, Okolodkov & Zamudio, 2003 |
| Ceratium balechii f. longum Meave del Castillo, Okolodkov & M.E. Zamudio, 2003 |
| Ceratium belone Cleve, 1900 |
| Ceratium biceps Clap. & J. Lachm., 1859 |
| Ceratium biconicum Murray & Whitt., 1899 |
| Ceratium bigelowii Kof., 1907 |
| Ceratium boehmii Graham & Bronik., 1944 |
| Ceratium brachyceros Daday, 1907 |
| Ceratium breve (Ostenf. & J.E. Schmidt) Schröd., 1906 |
| Ceratium breve var. schmidtii (Jørg.) Sournia, 1966 |
| Ceratium brunellii Rampi, 1942 |