Suessiales
Encyclopedia
Suessiales is a group of dinoflagellate
Dinoflagellate
The dinoflagellates are a large group of flagellate protists. Most are marine plankton, but they are common in fresh water habitats as well. Their populations are distributed depending on temperature, salinity, or depth...

s.

It includes Polarella
Polarella
Polarella is a genus of Alveolata.It includes the species Polarella glacialis....

 and Symbiodinium.
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