Hystrichosphaeridium senii
From dinoflaj3
?senii Srivastava and Banerjee, 1969, p.104, pl.1, fig.12. Holotype: Srivastava and Banerjee, 1969, pl.1, fig.12. Questionable assignment: Stover and Evitt (1978, p.56) as a problematic species. Age: Eocene.
Parent: Hystrichosphaeridium