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Cleistosphaeridium bergmannii

"Cleistosphaeridium bergmannii" Archangelsky, 1969a, p.414, pl.2, figs.8,11.

TYPE: Holotype: Archangelsky, 1969a, pl.2, fig.11.

HISTORY: NOW: Downiesphaeridium. Originally Cleistosphaeridium, subsequently Operculodinium, thirdly (and now) Downiesphaeridium.

AGE: Eocene.


Infraspecific taxa:


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