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Praecalcigonellum polymorphum subsp. tenue

Praecalcigonellum polymorphum subsp. tenue (Keupp, 1980a, p.131-132, pl.16, figs.2-6) Lentin and Williams, 1993, p.538.

TYPE: Holotype: Keupp, 1980a, pl.16, figs.2-3.

HISTORY: Originally Calcigonellum polymorphum subsp. tenue, subsequently (and now) Praecalcigonellum polymorphum subsp. tenue.

AGE: late Clansayesian.


Infraspecific taxa:


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