Impletosphaeridium tianjinense

tianjinense (Jiabo, 1978, p.59, pl.29, figs.13-14) Chen et al., 1988, p.8.  Holotype: Jiabo, 1978, pl.29, fig.13.  Originally Bipolaribucina, subsequently (and now) Impletosphaeridium.  Age: Early Tertiary.

Parent: Impletosphaeridium