Hystrichosphaeridium spiculatum
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"spiculatum" (White, 1844, p.87, pl.9, fig.4) Deflandre, 1937b, p.79. Holotype: White, 1844, pl.9, fig.4. NOW Baltisphaeridium spiculatum (Appendix A). Originally Xanthidium tubiferum var. spiculatum (Appendix A), subsequently Hystrichosphaeridium spiculatum, thirdly (and now) Baltisphaeridium spiculatum (Appendix A). Age: Late Cretaceous.
Parent: Hystrichosphaeridium