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Hystrichosphaeridium quadriradiatum

"Hystrichosphaeridium quadriradiatum" Timofeev, 1959, p.57; pl.4, fig.25.

TYPE: Holotype: Timofeev, 1959, pl.4, fig.25.

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

AGE: Early Ordovician.


Infraspecific taxa:


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