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Hemicystodinium congregatum

"Hemicystodinium congregatum" Stover, 1977, p.79, pl.3, figs.39-44.

TYPE: Holotype: Stover, 1977, pl.3, figs.39-42.

HISTORY: NOW: Polysphaeridium. Originally Hemicystodinium, subsequently (and now) Polysphaeridium.

AGE: mid Oligocene.


Infraspecific taxa:


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