Downiesphaeridium bulbum

?bulbum (Yu Jingxian, 1989, p.140, pl.51, figs.8–9) Williams et al., 1998, p.203.  Holotype: Yu Jingxian, 1989, pl.51, fig.8.  Originally Cleistosphaeridium, subsequently Downiesphaeridium, thirdly (and now) Downiesphaeridium?.  Questionable assignment: Masure in Fauconnier and Masure (2004, p.196).  Age: Eocene.

Parent: Downiesphaeridium