Scanning electron microscope image of the ventral face of Nannoceratopsis.
Nannoceratopsis is a ubiquitous dinoflagellate.
We know Nannoceratopsis from:
It has therefore been suggested that Nannoceratopsis was euryhaline, which means able to adapt to a wide range of salinities.
It is often the only dinoflagellate cyst to be found in the Middle Jurassic sandstone deposits of the North Sea, indicating a marine depositional setting.