Areosphaeridium polypetellum
From dinoflaj3
"polypetellum" Islam, 1983c, p.82,84, pl.2, figs.1–6. Holotype: Islam, 1983c, pl.2, fig.1. NOW Cleistosphaeridium. 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. Age: early-middle Eocene.
Parent: Areosphaeridium