Ostreopsidaceae is a family of free-living dinoflagellates found in marine environments.

Genera The World Register of Marine Species includes the following genera in the family : Alexandrium Halim Centrodinium Kofoid Coolia Meunier Fukuyoa Gomez, Qiu, Lopes & Lin Gambierdiscus Adachi & Fukuyo Ostreopsis J.Schmidt

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