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Heterosphaeridium heteracanthum subsp. sparsiprocessum

Heterosphaeridium heteracanthum subsp. sparsiprocessum (Varma and Dangwal, 1964, p.64, pl.1, fig.7) Eisenack and Kjellström, 1972, p.453.

TYPE: Holotype: Varma and Dangwal, 1964, pl.1, fig.7.

HISTORY: Originally Hystrichosphaeridium heteracanthum subsp. sparsiprocessum, subsequently (and now) Heterosphaeridium heteracanthum subsp. sparsiprocessum, thirdly (and now) Heterosphaeridium? heteracanthum subsp. sparsiprocessum.

AGE: Eocene-Oligocene.


Infraspecific taxa:


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