Polysphaeridium congregatum

congregatum (Stover, 1977, p.79, pl.3, figs.39-44) Bujak et al., 1980, p.34.  Holotype: Stover, 1977, pl.3, figs.39-42.  Originally Hemicystodinium, subsequently (and now) Polysphaeridium.  Age: mid Oligocene.

Parent: Polysphaeridium