Impagidinium aquaeductus

"aquaeductus" (Piasecki, 1980, p.70, pl.1, figs.1–3; pl.5, figs.1–2) Lentin and Williams, 1985, p.194.  Holotype: Piasecki, 1980, pl.1, figs.1–3.  NOW Unipontidinium.  Originally Nematosphaeropsis, subsequently Nematosphaeropsis?, thirdly Impagidinium, fourthly (and now) Unipontidinium.  N.I.A.  Age: middle Miocene.

Parent: Impagidinium