Gonyaulax nannotrix Deflandre, 1939

Now Leptodinium. Originally Gonyaulax, subsequently Gonyaulacysta, thirdly Rhynchodiniopsis?, fourthly (and now) Leptodinium.

Holotype: Deflandre, 1939, pl.6, fig.7; Jan du Chêne et al., 1986, pl.69, figs.4-6
Age: Kimmeridgian