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Dinoflagellates(Dinoflagellata) are a phylum of Alveolates eukaryotes. The taxon is subdivided in 8 classes (Ellobiophyceae, Psammosea, Oxyrrhea, Pronoctilucea, Duboscquellea, Syndiniophyceae, Noctiluciphyceae and Dinophyceae).