Goniosphaeridium balticum Appendix A
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"balticum" (Eisenack, 1951, p.190, pl.3, figs.10-11) Eisenack, 1969a, p.258. Holotype: Eisenack, 1951, pl.3, fig.10, lost according to Eisenack et al. (1973, p.478). NOW Pachysphaeridium (Appendix A). Originally Hystrichosphaeridium, subsequently Pulvinosphaeridium (combination not validly published, Appendix A), thirdly Veryhachium (Appendix A), fourthly Goniosphaeridium, fifthly Baltisphaeridium (Appendix A), sixthly Estriastra (Appendix A), seventhly (and now) Pachysphaeridium (Appendix A). Eisenack et al. (1973, p.477-479) retained this species in Goniosphaeridium. Age: Early Ordovician.
Parent: Goniosphaeridium
