Hystrichosphaera sergipensis
From dinoflaj3
"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