Impletosphaeridium erinaceum

"erinaceum" Morgenroth, 1966a, p.33–34, pl.8, figs.10–12.  Holotype: Morgenroth, 1966a, pl.8, fig.10.  NOW Operculodinium.  Originally Impletosphaeridium, subsequently (and now) Operculodinium.  Age: early-middle Miocene.

Parent: Impletosphaeridium