Wilsonidinium "triangulatum" (Yu Jingxian, 1989, p.155–156, pl.58, figs.2,5,8) He Chengquan et al., 2009, p.505.

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

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