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Appendix A

Geodia hillii

"Geodia? hillii" Merrill, 1895, p.17; text-fig.21.

TYPE: Holotype: Merrill, 1895, text-fig.21.

HISTORY: NOW: Hystrichosphaeridium?. Originally Geodia?, subsequently Hystrichosphaeridium, thirdly (and now) Hystrichosphaeridium?. Questionable assignment: Merrill (1895, p.17).

AGE: Early Cretaceous.


Infraspecific taxa:


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