Gymnodinium cretaceum Deflandre, 1935

Now Dinogymnium. Originally Gymnodinium, subsequently (and now) Dinogymnium.

Holotype: Deflandre, 1935, pl.5, figs.6-7, text-figs.4-5; Deflandre, 1936, pl.2, figs.1-2
Age: ?Senonian