Hystrichosphaeridium differtum
From dinoflaj3
"differtum" Sannemann, 1955, p.327, pl.4, fig.15; text-figs.5a–c. Holotype: Sannemann, 1955, pl.4, fig.15. NOW Baltisphaeridium (Appendix A). Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium (Appendix A). Age: Devonian (late Givetian).
Parent: Hystrichosphaeridium