From Fensome et al., 2019:
Palaeoperidinium ?chonetum Xu Jinli, 1987, p.153–154, pl.4, figs.6–10. Holotype: Xu Jinli, 1987, pl.4, fig.6. Questionable assignment: Evitt et al. (1998, p.48). Age: ?Middle–Late Eocene.

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