Impletosphaeridium tianshanense

tianshanense (He Chengquan, 1991, p.142, pl.25, figs.4–7; text-fig.28) Williams et al., 1998, p.336.  Holotype: He Chengquan, 1991, pl.25, fig.4.  Originally Cleistosphaeridium, subsequently (and now) Impletosphaeridium.  Age: early Eocene.

Parent: Impletosphaeridium