Hystrichosphaeridium huecospinosum
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"?huecospinosum" Cramer, 1964, p.331, pl.6, fig.2; text-fig.36, no.7. Holotype: Cramer, 1964, pl.6, fig.2. NOW Umbellasphaeridium (Appendix A). Originally Hystrichosphaeridium?, subsequently Baltisphaeridium? (combination not validly published; Appendix A), thirdly Florisphaeridium (Appendix A), fourthly (and now) Umbellasphaeridium (Appendix A). Questionable assignment: Cramer (1964, p.331). Age: Devonian (Emsian).
Parent: Hystrichosphaeridium