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Cleistosphaeridium sphericum

"Cleistosphaeridium? sphericum" Horowitz, 1975, p.24, pl.1, fig.5.

TYPE: Holotype: Horowitz, 1975, pl.1, fig.5.

HISTORY: NOW: Impletosphaeridium?. Originally Cleistosphaeridium, subsequently Cleistosphaeridium?, thirdly (and now) Impletosphaeridium?. Questionable assignment: Stover and Evitt (1978, p.32), as a problematical species.

AGE: Late Jurassic.


Infraspecific taxa:


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