''Ceratoperidinium'' is a genus of

dinoflagellate The Dinoflagellates (), also called Dinophytes, are a monophyletic group of single-celled eukaryotes constituting the phylum Dinoflagellata and are usually considered protists. Dinoflagellates are mostly marine plankton, but they are also commo ...

s in the order

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

. The genus contains two species. It was first created in 1969 by Margalef, with ''Ceratoperidinium yeye'' as the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

. 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