Oligosphaeridium fenestratum
From dinoflaj2
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: mid Barremian.
Parent: Oligosphaeridium