Impagidinium sphaericum

sphaericum (Wall, 1967, p.108, pl.15, figs.11–15; text-figs.2a–c) Lentin and Williams, 1981, p.154.  Holotype: Wall, 1967, pl.15, figs.11–12.  Originally Leptodinium, subsequently (and now) Impagidinium.  Age: Pleistocene–Holocene.

Parent: Impagidinium