Gonyaulacysta longicornis

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"?longicornis" (Downie, 1957, p.420, pl.20, fig.8; text-figs.2a-b) Sarjeant, 1969, p.10.  Holotype: Downie, 1957, pl.20, fig.8; text-figs.2a-b; Jan du Chêne et al., 1986a, pl.30, fig.1.  NOW Cribroperidinium?.  Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta, thirdly Gonyaulacysta?, fourthly Millioudodinium, fifthly (and now) Cribroperidinium?.  Questionable assignment: Stover and Evitt (1978, p.158).  This combination, as a questionable assignment, was not validly published in Sarjeant (1966b, p.131), since that author did not fully reference the basionym.  Age: Late Kimmeridgian.

Parent: Gonyaulacysta