Cleistosphaeridium bulbum
From dinoflaj2
"bulbum" Yu Jingxian, 1989, p.140, pl.51, figs.8-9. Holotype: Yu Jingxian, 1989, pl.51, fig.8. NOW Downiesphaeridium?. Originally Cleistosphaeridium, subsequently Downiesphaeridium, thirdly (and now) Downiesphaeridium?. Age: Eocene.
Parent: Cleistosphaeridium
