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