Wilsonidium intermedium

"intermedium" (Cookson and Eisenack, 1961b, p.40, pl.1, figs.5–6) Costa and Downie, 1979, p.45.  Holotype: Cookson and Eisenack, 1961b, pl.1, fig.5.  NOW Castellodinium.  Originally Wetzeliella, subsequently Rhombodinium, thirdly Wilsonidium, fourthly (and now) Castellodinium.  Age: Eocene.

Parent: Wilsonidium