Rhynchodiniopsis perforans
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"perforans" (Cookson and Eisenack, 1958, p.30-32, pl.2, figs.1-4,7-8; text-figs.8-9) Sarjeant, 1982b, p.35. Holotype: Cookson and Eisenack, 1958, pl.2, fig.1; text-figs.8-9; Jan du Chêne et al., 1986a, pl.32, fig.2. NOW Cribroperidinium?. Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta, thirdly Leptodinium?, fourthly Rhynchodiniopsis, fifthly Cribroperidinium, sixthly (and now) Cribroperidinium?. Age: Late Jurassic.
Parent: Rhynchodiniopsis