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Appendix A

Baltisphaeridium severinii

"Baltisphaeridium severinii" Cookson and Cranwell, 1967, p.208, pl.3, figs.1-2.

TYPE: Holotype: Cookson and Cranwell, 1967, pl.3, fig.1.

HISTORY: NOW: Operculodinium. Originally Baltisphaeridium, subsequently Impletosphaeridium, thirdly (and now) Operculodinium.

AGE: Eocene-Oligocene.


Infraspecific taxa:


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