Hystrichosphaeridium huecospinosum
From dinoflaj2
"?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