Alisogymnium deflandrei, (Boltenhagen, 1977), Lentin and Vozzhennikova, 1990

Holotype: Boltenhagen, 1977, pl.9, figs.1b-c; Lentin and Vozzhennikova, 1990, Appendix A, fig.31.
Originally Dinogymnium, subsequently (and now) Alisogymnium.
Age: Late Senonian