Nematosphaeropsis grandis

"grandis" Davey, 1975, p.153–154, pl.1, fig.9.  Holotype: Davey, 1975, pl.1, fig.9; Jan du Chêne et al., 1986a, pl.55, figs.1–8.  NOW Unipontidinium.  Originally Nematosphaeropsis, subsequently Impagidinium, thirdly (and now) Unipontidinium.  Age: Senonian, ?Campanian.

Parent: Nematosphaeropsis