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Cleistosphaeridium multispinosum

"Cleistosphaeridium? multispinosum" (C. Singh, 1964, p.141-142, pl.20, figs.1-2) Brideaux, 1971, p.93.

TYPE: Holotype: C. Singh, 1964, pl.20, fig.1.

HISTORY: NOW: Downiesphaeridium. Originally Baltisphaeridium (Appendix A), subsequently Cleistosphaeridium, thirdly Cleistosphaeridium?, fourthly (and now) Downiesphaeridium. Questionable assignment: Stover and Evitt (1978, p.31).

AGE: Mid Albian-Early Cenomanian.


Infraspecific taxa:


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