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Diagnostic features

Dinoflagellate with roughly spherical but flattened cells, with a groove (cingulum) circling the cell, containing a flagellum. Thick armoured plates cover the cell wall. Some species possess blunt horns (one from the apical half of the cell, two from the lower half, like a blunter Ceratium).

Typical habitats

Lakes and ponds with moderate to good water quality


Kingdom Chromista
Phylum Myzozoa
Class Peridinea
Order Peridiniida
Family Peridiniidae
Common name Dinoflagellates