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Hystrichosphaeridium transculentum

"Hystrichosphaeridium? transculentum" Sah et al., 1970, p.147, pl.2, figs.18-19.

TYPE: Holotype: Sah et al., 1970, pl.2, fig.18.

HISTORY: NOW: Achomosphaera. Originally Hystrichosphaeridium, subsequently Hystrichosphaeridium?, thirdly (and now) Achomosphaera. Questionable assignment: Stover and Evitt (1978, p.56) as a problematical species.

AGE: Late Cretaceous.


Infraspecific taxa:


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