Hystrichosphaeridium alagoense
From dinoflaj3
"alagoense" Regali et al., 1974, p.290, pl.24, fig.2. Holotype: Regali et al., 1974, pl.24, fig.2. NOW Surculosphaeridium?. Originally Hystrichosphaeridium, subsequently (and now) Surculosphaeridium?. Age: middle Eocene–Miocene.
Parent: Hystrichosphaeridium