Hystrichosphaera porosa
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"porosa" Manum and Cookson, 1964, p.11–12, pl.2, figs.1–5; text-fig.2. Holotype: Manum and Cookson, 1964, pl.2, figs.2–3; text-fig.2. NOW Spiniferites. Originally Hystrichosphaera, subsequently (and now) Spiniferites. Age: Late Cretaceous.
Parent: Hystrichosphaera