Hystrichosphaeridium ordovicum

"ordovicum" Timofeev, 1959, p.56, pl.4, fig.20. Holotype: Timofeev, 1959, pl.4, fig.20. NOW Baltisphaeridium (Appendix A). Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium (Appendix A). Age: Early Ordovician.