Ascodinium pontis-mariae, (Deflandre, 1936), Deflandre, 1966

Now Subtilisphaera. Originally Gymnodinium, subsequently Deflandrea, thirdly Ascodinium, fourthly (and now) Subtilisphaera.

Holotype: Deflandre, 1936, pl.2, fig.7
Age: ?Senonian