Wilsonidium compactum
From dinoflaj3
"compactum" Michoux, 1988, p.38–39, pl.9, figs.1–9; pl.10, figs.1–9 (not fig.10); text-figs.13A–B,14. Holotype: Michoux, 1988, pl.9, figs.1–3; text-figs.13A–B. NOW Castellodinium. Originally Wilsonidium, subsequently (and now) Castellodinium. Age: middle Eocene.
Parent: Wilsonidium