Dinogymnium hexagonum

?hexagonum (Deflandre-Rigaud, 1954, p.58, text-figs.1–2) Evitt et al., 1967, p.20.  Holotype: Deflandre-Rigaud, 1954, text-figs.1–2.  Originally Gymnodinium (Appendix B), subsequently Dinogymnium, thirdly (and now) Dinogymnium?.  Questionable assignment: Stover and Evitt (1978, p.38) as a problematic species.  Age: Campanian–?Maastrichtian.

Parent: Dinogymnium