Baltisphaeridium severinii Appendix A

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"severinii" Cookson and Cranwell, 1967, p.208, pl.3, figs.1-2.  Holotype: Cookson and Cranwell, 1967, pl.3, fig.1.  NOW Operculodinium.  Originally Baltisphaeridium, subsequently Impletosphaeridium, thirdly (and now) Operculodinium.  Age: Eocene-Oligocene.

Parent: Baltisphaeridium