Wilsonidium "subtile" He Chengquan and Wang Kede, 1990, p.418,424, pl.2, fig.3; text-fig.2.
Holotype: He Chengquan and Wang Kede, 1990, pl.2, fig.3; text-fig.2.
Now Stichodinium. Originally Wilsonidium, subsequently (and now) Stichodinium.
Age: late early Eocene.