Gonyaulacysta striata

"striata" Clarke and Verdier, 1967, p.31, pl.4, figs.11–13; pl.5, fig.15; text-fig.12.  Holotype: Clarke and Verdier, 1967, pl.4, figs.11–13; Jan du Chêne et al., 1986a, pl.88, figs.9–11.  NOW Pterodinium.  Originally Gonyaulacysta, subsequently Leptodinium, thirdly Impagidinium, fourthly (and now) Pterodinium.  Age: Santonian.

Parent: Gonyaulacysta