Cleistosphaeridium perforoconum

"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