Oligosphaeridium fenestratum
From dinoflaj3
fenestratum Duxbury, 1980, p.130–131, pl.9, figs.8–9. Holotype: Duxbury, 1980, pl.9, figs.8–9; Fauconnier and Masure, 2004, pl.59, figs.1–2. Age: middle Barremian.
Parent: Oligosphaeridium