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Cleistosphaeridium bahiaense

From Fensome et al., 2019:
Cleistosphaeridium? bahiaense (Regali et al., 1974, p.289–290, pl.23, fig.5) Lentin and Williams, 1981, p.47. Holotype: Regali et al., 1974, pl.23, fig.5. NOW Operculodinium. Originally Hystrichosphaeridium, subsequently Cleistosphaeridium?, thirdly Impletosphaeridium?, fourthly (and now) Operculodinium. Questionable assignment: Lentin and Williams (1981, p.47). Age: Eocene–Oligocene.

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