Polysphaeridium giganteum

"giganteum" Caro, 1973, p.360-361, pl.2, fig.12.  Holotype: Caro, 1973, pl.2, fig.12; Fauconnier and Masure, 2004, pl.49, figs.13-14.  NOW Exochosphaeridium.  Originally Polysphaeridium, subsequently Cleistosphaeridium, thirdly Impletosphaeridium, fourthly (and now) Exochosphaeridium.  Age: Early Eocene.

Parent: Polysphaeridium