Hystrichosphaeridium perforatum
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"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