Hystrichosphaeridium gotlandicum

"gotlandicum" Eisenack, 1954a, p.209, pl.1, fig.5; text-fig.6.  Holotype: Eisenack, 1954a, pl.1, fig.5.  NOW Visbysphaera (Appendix A).  Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Multiplicisphaeridium (Appendix A), fourthly (and now) Visbysphaera (Appendix A).  Taxonomic junior synonym: Baltisphaeridium peltatum Cramer, 1966, an acritarch species, according to Cramer (1970, p.157).  Age: Silurian (late Llandovery).

Parent: Hystrichosphaeridium