Gymnodinium avellanum Lejeune-Carpentier, 1951; Emendation: Lejeune-Carpentier and Sarjeant, 1981, p.10–11, as Dinogymnium avellanum.

Now Dinogymnium. Originally Gymnodinium, subsequently (and now) Dinogymnium.

Holotype: Lejeune-Carpentier, 1951, text-fig.3; Streel et al., 1977, pl.2, fig.7
Age: Maastrichtian