Epelidinium triangulatum (Yu Jingxian, 1989, p.155–156, pl.58, figs.2,5,8) Williams et al., 2015, p.305.

Originally Gochtodinium, subsequently Wetzeliella, thirdly Wilsonidium, fourthly (and now) Epelidinium.

Holotype: Yu Jingxian, 1989, pl.58, fig.2.
Age: Eocene.