Palaeoperidinium dictyophorum Deflandre, 1938

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

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