Impagidinium arachnion
From dinoflaj3
arachnion de Verteuil and Norris, 1996a, p.140,142,144, pl.9, figs.9–20; pl.10, figs.1–5; pl.18, figs.4–6. Holotype: de Verteuil and Norris, 1996a, pl.9, figs.9–12. N.I.A. Age: middle-late Miocene.
Parent: Impagidinium