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Exochosphaeridium spinosum

Exochosphaeridium? spinosum (White, 1842, p.37, pl.4, fig.6) Davey 1969a, p.166.

TYPE: Holotype: White, 1842, pl.4, fig.6.

HISTORY: Originally Xanthidium (Appendix A), subsequently Hystrichosphaeridium, thirdly Baltisphaeridium (Appendix A), fourthly Cordosphaeridium (combination not validly published), fifthly Exochosphaeridium, sixthly (and now) Exochosphaeridium?. Questionable assignment: Stover and Evitt (1978, p.154).

AGE: Late Cretaceous.


Infraspecific taxa:


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