Hystrichosphaeridium membranaceum
From dinoflaj2
"membranaceum" Philippot, 1949, p.57-58; text-fig.3. Holotype: Philippot, 1949, text-fig.3. NOW Cymatiosphaera philippotii (Appendix A). Originally Hystrichosphaeridium membranaceum, subsequently Cymatiosphaera membranacea (name illegitimate; Appendix A), thirdly (and now) Cymatiosphaera philippotii (Appendix A). Age: Late Cretaceous.
Parent: Hystrichosphaeridium
