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Millioudodinium monacanthum
Millioudodinium monacanthum (Deflandre, 1936b, p.176–177, pl.5, fig.10 ex Sarjeant, 1967b, p.252) Stover and Evitt, 1978, p.174.
Now Apteodinium. Originally Palaeoperidinium, subsequently Gonyaulacysta, thirdly Millioudodinium, fourthly (and now) Apteodinium.
Holotype: Deflandre, 1935, pl.6, fig.1; Deflandre, 1936b, pl.5, fig.10; lost according to Jan du Chêne et al. (1986a, p.48).
Age: Senonian
Now Apteodinium. Originally Palaeoperidinium, subsequently Gonyaulacysta, thirdly Millioudodinium, fourthly (and now) Apteodinium.
Holotype: Deflandre, 1935, pl.6, fig.1; Deflandre, 1936b, pl.5, fig.10; lost according to Jan du Chêne et al. (1986a, p.48).
Age: Senonian