Cleistosphaeridium polypetellum

polypetellum (Islam, 1983c, p.82,84, pl.2, figs.1–6) Stover and Williams, 1995, p.102.  Holotype: Islam, 1983c, pl.2, fig.1.  Originally Areosphaeridium, subsequently (and now) Cleistosphaeridium.  Taxonomic senior synonym: Cleistosphaeridium (as Systematophora) diversispinosum, according to Islam (1993, p.88) — however, Eaton et al. (2001, p.194) retained Cleistosphaeridium polypetellum.  Eaton et al. (2001, p.194) also proposed this combination.  Age: early-middle Eocene.

Parent: Cleistosphaeridium