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Downiesphaeridium armatum

Downiesphaeridium armatum (Deflandre, 1937b, p.76-77, pl.16 [al. pl.13], figs.6-7) Islam, 1993, p.84.

EMENDATION: Davey, 1969a, p.153, as Cleistosphaeridium armatum.

TYPE: Holotype: Deflandre, 1937b, pl.16 (al. pl.13), fig.6.

HISTORY: Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cleistosphaeridium, fourthly (and now) Downiesphaeridium.

AGE: late Senonian.


Infraspecific taxa:


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