Gonyaulax millioudii Sarjeant, 1963

Now Leptodinium. Originally Gonyaulax, subsequently (and now) Leptodinium; see also Gonyaulacysta (combination not validly published).

Holotype: Sarjeant, 1963, pl.1, figs.4-7; Jan du Chêne et al., 1986, pl.71, figs.4-7.
Age: Oxfordian