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Bipolaribucina tianjinensis

"Bipolaribucina tianjinensis" Jiabo, 1978, p.59, pl.29, figs.13-14.

TYPE: Holotype: Jiabo, 1978, pl.29, fig.13.

HISTORY: NOW: Impletosphaeridium. Originally Bipolaribucina, subsequently (and now) Impletosphaeridium.

AGE: Early Tertiary.


Infraspecific taxa:


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