Aldorfia dictyophora, (Deflandre, 1938), Stover and Evitt, 1978

NOW Scriniodinium. Originally Palaeoperidinium, subsequently Gonyaulacysta, thirdly Aldorfia, fourthly (and now) Scriniodinium.

Holotype: Deflandre, 1938b, pl.8, fig.1 and Jan du Chêne et al., 1986, pl.7, figs.1-5.
Age: Oxfordian