Quantouendinium trigonum (Lang Yan et al., 1999, p.375,387–388, pl.3, figs.1–7) He Chengquan et al., 2009, p.306. Holotype: Lang Yan et al., 1999, pl.3, fig.3. Originally Nyktericysta, subsequently (and now) Quantouendinium. Age: Early Cretaceous.