Peridinium ventriosum O. Wetzel, 1933

Now Cribroperidinium. Originally Peridinium, subsequently Palaeoperidinium, thirdly (and now) Cribroperidinium.
Holotype: O. Wetzel, 1933, pl.2, fig.4; Lejeune-Carpentier, 1946, fig.2; Lejeune-Carpentier and Sarjeant, 1981, pl.1, figs.3-4; textfig.3
Age: Senonian