Gonyaulacysta hyalodermopsis

"hyalodermopsis" (Cookson and Eisenack, 1958, p.34, pl.3, figs.11–12; text-figs.5–6) Sarjeant, 1969, p.10.  Holotype: Cookson and Eisenack, 1958, pl.3, figs.11–12; text-figs.5–6; Jan du Chêne et al., 1986a, pl.74, figs.9–10.  NOW Leptodinium?.  Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta, thirdly (and now) Leptodinium?, fourthly Rhynchodiniopsis.  This combination was not validly published in Sarjeant (1966b, p.131), since that author did not fully reference the basionym.  Age: Neocomian–Aptian.

Parent: Gonyaulacysta