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Kallosphaeridium helbyi subsp. psilatum

Kallosphaeridium helbyi subsp. psilatum (Burger, 1980a, p.71, pl.25, figs.5-11) Lentin and Williams, 1989, p.206.

TYPE: Holotype: Burger, 1980a, pl.25, fig.10.

HISTORY: Originally Canningia? minor var. psilata, subsequently Canningia? minor subsp. psilata, thirdly Chytroeisphaeridia minor subsp. psilata, fourthly (and now) Kallosphaeridium? helbyi subsp. psilatum.

AGE: Aptian-Albian.


Infraspecific taxa:


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