Gonyaulacysta nuciformis
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"nuciformis" (Deflandre, 1939a, p.180, pl.8, figs.4–6 ex Sarjeant, 1962a, p.482–483) Sarjeant, 1968, p.227. 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). This combination, as a questionable assignment, was not validly published in Sarjeant (1966b, p.132), since that author did not fully reference the basionym. Age: Oxfordian.
Parent: Gonyaulacysta