Vulcanisphaera tuberata Appendix A

"tuberata" (Downie, 1958, p.338, pl.17, fig.3; text-fig.3f) Eisenack et al., 1973, p.1087–1088.  Holotype: Downie, 1958, pl.17, fig.3.  NOW Acanthodiacrodium (Appendix A).  Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly (and now) Acanthodiacrodium (Appendix A), fourthly Vulcanisphaera, fifthly Goniosphaeridium (Appendix A).  Age: Early Ordovician.

Parent: Vulcanisphaera_Appendix A