Impletosphaeridium tianjinense
From dinoflaj3
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