Hystrichosphaeridium spinosum
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"spinosum" (White, 1842, p.37, pl.4, fig.6) Lejeune-Carpentier, 1941, p.B76. Holotype: White, 1842, pl.4, fig.6. NOW Exochosphaeridium?. Originally Xanthidium (Appendix A), subsequently Hystrichosphaeridium, thirdly Baltisphaeridium (Appendix A), fourthly Cordosphaeridium (combination not validly published), fifthly Exochosphaeridium, sixthly (and now) Exochosphaeridium?. Age: Late Cretaceous.
Parent: Hystrichosphaeridium
Infrataxon List:
