Hystrichosphaeridium simplex

"simplex" (White, 1842, p.38, pl.4, fig.10) Deflandre, 1946a, card 934.  Holotype: White, 1842, pl.4, fig.10.  NOW Dapsilidinium simplex.  Originally Xanthidium tubiferum var. simplex (Appendix A), subsequently Xanthidium simplex (Appendix A), thirdly Hystrichosphaeridium simplex, fourthly Polysphaeridium? simplex, fifthly (and now) Dapsilidinium simplex.  Age: Late Cretaceous.

Parent: Hystrichosphaeridium