From Fensome et al., 2019:
Diconodinium fehmarnense (Morgenroth, 1966a, p.4–5, pl.1, fig.1) Lentin and Williams, 1973, p.46. Holotype: Morgenroth, 1966a, pl.1, fig.1. Originally Gymnodinium (Appendix B), subsequently (and now) Diconodinium?. Questionable assignment: Lentin and Williams (1973, p.46). Age: Early Eocene.

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