Nematosphaeropsis grandis
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"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