Hystrichosphaeridium longispinosoides
From dinoflaj3
"longispinosoides" Sannemann, 1955, p.329–330; pl.1, fig.10; pl.2, figs.1–4; pl.3, figs.6,8; pl.6, figs.1–6; text-figs.9a–b. Holotype: Sannemann, 1955, pl.6, fig.1. NOW Baltisphaeridium (Appendix A). Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium (Appendix A). Age: Devonian (late Givetian).
Parent: Hystrichosphaeridium