Cleistosphaeridium perforoconum
From dinoflaj2
"perforoconum" Yun Hyesu, 1981, p.43, pl.15, figs.1-4. Holotype: Yun Hyesu, 1981, pl.15, fig.4; Fensome et al., 1991, fig.4 - p.707; Fauconnier and Masure, 2004, pl.70, figs.2-3. NOW Sentusidinium. Originally Cleistosphaeridium, subsequently (and now) Sentusidinium. Age: Early Santonian.
Parent: Cleistosphaeridium