Hystrichosphaeridium brevifurcatum
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"brevifurcatum" Eisenack, 1954a, p.207–208, pl.1, fig.2; text-fig.2. Holotype: Eisenack, 1954a, pl.1, fig.2. NOW Visbysphaera (Appendix A). Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly (and now) Visbysphaera (Appendix A), fourthly Multiplicisphaeridium (Appendix A). Age: Silurian (late Llandovery).
Parent: Hystrichosphaeridium