Bipolaribucina pusilla
From dinoflaj2
"pusilla" Liu Zhili and Zheng Yuefang in Liu Zhili et al., 1992, p.53-54, pl.12, figs.1-6. Holotype: Liu Zhili et al., 1992, pl.12, fig.2. NOW Distatodinium. Originally Bipolaribucina, subsequently (and now) Distatodinium. Age: early Tertiary.
Parent: Bipolaribucina