Hystrichosphaeridium perforatum

"perforatum" Gocht, 1959, p.68–69, pl.3, fig.7; pl.7, figs.13–16.  Holotype: Gocht, 1959, pl.3, fig.7; pl.7, fig.13; Fauconnier and Masure, 2004, pl.59, figs.3–11.  NOW Oligosphaeridium.  Originally Hystrichosphaeridium, subsequently (and now) Oligosphaeridium.  Age: Hauterivian–Barremian.

Parent: Hystrichosphaeridium