''Ceratoperidinium'' is a genus of

dinoflagellate The dinoflagellates (Greek δῖνος ''dinos'' "whirling" and Latin ''flagellum'' "whip, scourge") are a monophyletic group of single-celled eukaryotes constituting the phylum Dinoflagellata and are usually considered algae. Dinoflagellates are ...

s in the order

Gymnodiniales The Gymnodiniales are an order of dinoflagellates, of the class Dinophyceae. Members of the order are known as gymnodinioid or gymnodinoid (terms that can also refer to any organism of similar morphology). They are athecate, or lacking an armore ...

. The genus contains two species. It was first created in 1969 by Margalef, with ''Ceratoperidinium yeye'' as the type species. However, because it was not correctly described it was considered invalid, as was ''C. yeye''. In 1980, Lobelich III described the genus as ''Ceratoperidinium'' Margalef ''ex'' Loeblich III, renaming ''C. yeye'' as ''C. margalefii''. In 2014, ''Gyrodinium falcatum'' was reassigned to ''Ceratoperidinium'' based on genetic analysis.

References

{{Taxonbar, from=Q20676923 Dinoflagellate genera Gymnodiniales