Impagidinium simplicium

?simplicium (Cookson and Eisenack, 1961b, p.42, pl.2, figs.3–4; text-figs.1e–f) Stover and Evitt, 1978, p.166.  Holotype: Cookson and Eisenack, 1961b, pl.2, figs.3–4; text-figs.1e–f; Jan du Chêne et al., 1986a, pl.54, figs.1–5.  Originally Rottnestia, subsequently Psaligonyaulax, thirdly (and now) Impagidinium?.  Questionable assignment: Stover and Evitt (1978, p.166).  Age: Eocene.

Parent: Impagidinium