Hystrichosphaeridium tshunense

"tshunense" Timofeev, 1962 - caption to pl.11, fig.1. Holotype: Timofeev, 1962 pl.11, fig.1. NOW Baltisphaeridium (Appendix A). Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium (Appendix A). Age: Mid Ordovician.