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Hystrichosphaeridium arrectum

"Hystrichosphaeridium arrectum" Timofeev, 1959, p.53, pl.4, fig.8.

TYPE: Holotype: Timofeev, 1959, pl.4, fig.8.

HISTORY: NOW: Baltisphaeridium (Appendix A). Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium (Appendix A).

AGE: Early-Mid Ordovician.


Infraspecific taxa:


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