Dinopterygium bicuneatum (Deflandre, 1938) Lentin and Williams, 1981

Now Cornudinium. Originally Palaeoperidinium, subsequently Scriniodinium, thirdly Glossodinium, fourthly Dinopterygium, fifthly (and now) Cornudinium.
Holotype: Deflandre, 1938, pl.8, fig.7
Age: Oxfordian