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Cleistosphaeridium spinulastrum

"Cleistosphaeridium spinulastrum" Islam, 1983b, p.337-338, pl.2, figs.1-2.

TYPE: Holotype: Islam, 1983b, pl.2, fig.1; Islam, 1993, pl.1, fig.11.

HISTORY: NOW: Downiesphaeridium. Originally Cleistosphaeridium, subsequently (and now) Downiesphaeridium.

AGE: Mid Eocene.


Infraspecific taxa:


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