Dichadogonyaulax pachyderma
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"pachyderma" (Deflandre, 1939a, p.176-178, pl.7, figs.6-10; text-figs.7-10) Courtinat, 1989, p.211. Holotype: Deflandre, 1939a, pl.7, figs.6-7. NOW Korystocysta. Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta, thirdly Ctenidodinium, fourthly Ctenidodinium?, fifthly (and now) Korystocysta, sixthly Dichadogonyaulax. Taxonomic junior synonyms: Leptodinium (as Korystocysta) norrisii, according to Benson (1985, p.154); Dichadogonyaulax (subsequently Korystocysta) kettonensis, by implication in Conway (1990, p.35), who considered Dichadogonyaulax kettonensis to be the senior name - however, Lentin and Williams (1993, p.374) retained Dichadogonyaulax (as Korystocysta) kettonensis. Age: Oxfordian.
Parent: Dichadogonyaulax