Hystrichosphaeridium gotlandicum
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"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