Cleistosphaeridium bulbum

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"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