Cleistosphaeridium bulbum

"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