Dinogymnium cooksoniae Boltenhagen, 1977

Now Amphigymnium. Originally Dinogymnium, subsequently (and now) Amphigymnium.
Holotype: Boltenhagen, 1977, pl.11, figs.5a-c; Lentin and Vozzhennikova, 1990, Appendix A, fig.40
Age: Campanian