Acanthaulax aceras

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"?aceras" (Eisenack, 1958a, p.391, pl.21, figs.1-2) Stover and Evitt, 1978, p.137.  Emendation: Sarjeant, 1985a, p.57,59, as Cribroperidinium aceras.  Holotype: Eisenack, 1958a, pl.21, fig.1; Sarjeant, 1985a, pl.4, figs.1-2; Jan du Chêne et al., 1986a, pl.2, figs.6-7.  NOW Cribroperidinium.  Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta? (combination not validly published), thirdly Leptodinium, fourthly Acanthaulax?, fifthly (and now) Cribroperidinium.  Questionable assignment: Stover and Evitt (1978, p.137).  Age: Aptian.

Parent: Acanthaulax