Wilsonidium echinosuturatum
From dinoflaj2
echinosuturatum (Wilson, 1967c, p.477-479, figs.3,22-25) Lentin and Williams, 1976, p.139. Holotype: Wilson, 1967c, figs.22-24. Originally Wetzeliella, subsequently (and now) Wilsonidium. Age: Mid Eocene.
Parent: Wilsonidium