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|Noun||1.||Peridiniidae - marine and freshwater dinoflagellates|
protoctist family - any of the families of Protoctista
Cilioflagellata, Dinoflagellata, order Cilioflagellata, order Dinoflagellata - in some classifications considered a phylum of the kingdom Protista; in others included in the plant phylum Pyrrophyta
peridinian - flagellate with a thick test composed of plates
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