Impagidinium cristatum
From dinoflaj2
cristatum (May, 1980, p.57, pl.5, figs.16-20) Lentin and Williams, 1981, p.153. Holotype: May, 1980, pl.5, figs.16-20. Originally Leptodinium, subsequently (and now) Impagidinium. Age: Late Campanian-Early Maastrichtian.
Parent: Impagidinium