Hystrichosphaera sergipensis

"sergipensis" Regali et al., 1974, p.291, pl.24, fig.1.  Holotype: Regali et al., 1974, pl.24, fig.1.  NOW Hystrichosphaeridium?.  Originally Hystrichosphaera, subsequently (and now) Hystrichosphaeridium?.  Age: early Eocene.

Parent: Hystrichosphaera