Palaeoperidinium ?primaevum He Chengquan in Zheng Yahui and He Chengquan, 1984, p.98, pl.8, fig.21; pl.9, figs.5–6.
Holotype: Zheng Yahui and He Chengquan, 1984, pl.8, fig.21.
Questionable assignment: Evitt et al. (1998, p.48).
Age: Late Cretaceous.