Veryhachium balticum Eisenack 1951 Appendix A

"balticum" (Eisenack, 1951, p.190, pl.3, figs.10–11) Eisenack, 1959, p.204.  Holotype: Eisenack, 1951, pl.3, fig.10.  NOW Pachysphaeridium (Appendix A).  Originally Hystrichosphaeridium, subsequently Pulvinosphaeridium (combination not validly published, Appendix A), thirdly Veryhachium, fourthly Goniosphaeridium (Appendix A), fifthly Baltisphaeridium (Appendix A), sixthly Estiastra (Appendix A), seventhly (and now) Pachysphaeridium (Appendix A).  Junior homonym: Veryhachium balticum Yankauskas and Vaitekunene, 1972, an acritarch species.  This combination was not validly published in Deunff (1954b, p.306), since that author did not fully reference the basionym or clearly use the name Veryhachium balticum.  Age: Early Ordovician.

Parent: Veryhachium_Appendix A