Downiesphaeridium spinulastrum

*spinulastrum (Islam, 1983b, p.337–338, pl.2, figs.1–2) Islam, 1993, p.84.  Holotype: Islam, 1983b, pl.2, fig.1; Islam, 1993, pl.1, fig.11.  Originally Cleistosphaeridium, subsequently (and now) Downiesphaeridium.  Age: middle Eocene.

Parent: Downiesphaeridium