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Gymnodinium (Gymnodiniidae)

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Diagnostic features

Cells roughly spherical, with a groove (cingulum) circling the cell containing one of two flagella. The cingulum is at approx. the cell equator, so the two halves of the cell are a similar size.  The periplast plates surrounding the cells of this genus are much thinner than most, leading to a "naked" or "unarmoured" appearance.

[Gymnodinium], X1000. Photo: Phil Novis, Manaaki Whenua Image
Gymnodinium, X1000. Photo: Phil Novis, Manaaki Whenua

Typical habitats

Lakes and ponds with moderate to good water quality

Classification

Kingdom Chromista
Phylum Myzozoa
Class Peridinea
Order Gymnodiniida
Family Gymnodiniidae
Common name Dinoflagellates