Pulvinosphaeridium balticum Appendix A

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"balticum" (Eisenack, 1951, p.190, pl.3, figs.10-11) Eisenack, 1954a, p.210.  Holotype: Eisenack, 1951, pl.3, fig.10.  Combination not validly published: basionym not fully referenced.  NOW Pachysphaeridium (Appendix A).  Originally Hystrichosphaeridium, subsequently Pulvinosphaeridium (combination not validly published), thirdly Veryhachium (Appendix A), fourthly Goniosphaeridium (Appendix A), fifthly Baltisphaeridium (Appendix A), sixthly Estiastra (Appendix A), seventhy (and now) Pachysphaeridium (Appendix A).  Age: Early Ordovician.

Parent: Pulvinosphaeridium