Apteodinium nuciforme

"nuciforme" (Deflandre, 1939a, p.180, pl.8, figs.4–6 ex Sarjeant, 1962a, p.482–483, pl.69, fig.6; text-fig.4) Stover and Evitt, 1978, p.142.  Holotype: Deflandre, 1939a, pl.8, fig.6; Jan du Chêne et al., 1986a, pl.11, figs.1–3.  NOW Cribroperidinium.  Originally Palaeoperidinium (name not validly published), subsequently Gonyaulax (Appendix B), thirdly Gonyaulacysta, fourthly Apteodinium, fifthly Millioudodinium, sixthly (and now) Cribroperidinium.  Taxonomic junior synonym: Palaeoperidinium nuciformoides, according to Sarjeant (1968, p.227).  Age: Oxfordian.

Parent: Apteodinium