Hystrichosphaeridium brevifurcatum

"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