Hemicystodinium congregatum

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"congregatum" Stover, 1977, p.79, pl.3, figs.39–44.  Holotype: Stover, 1977, pl.3, figs.39–42.  NOW Polysphaeridium.  Originally Hemicystodinium, subsequently (and now) Polysphaeridium.  Age: middle Oligocene.

Parent: Hemicystodinium