Gonyaulacysta porosa

"?porosa" (Lejeune-Carpentier, 1946, p.B193,B196; text-fig.6) Sarjeant, 1966b, p.132.  Emendation: Lejeune-Carpentier and Sarjeant, 1981, p.7–8, as Leptodinium porosum. Holotype: Lejeune-Carpentier, 1946, text-fig.6; Streel et al., 1977, pl.2, fig.4; Lejeune-Carpentier and Sarjeant, 1981, pl.3, figs.1–2; text-fig.4.  Combination not validly published: basionym not fully referenced.  NOW Leptodinium.  Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta (combination not validly published), thirdly (and now) Leptodinium, fourthly Leptodinium?.  Questionable assignment: Sarjeant (1966b, p.132).  Age: Late Cretaceous.

Parent: Gonyaulacysta