Hystrichosphaeridium asterium
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"asterium" Eaton, 1976, p.273, pl.11, figs.7–10. Holotype: Eaton, 1976, pl.11, figs.7–8. NOW Melitasphaeridium. Originally Hystrichosphaeridium, subsequently (and now) Melitasphaeridium. Age: middle Eocene (see Aubry, 1986).
Parent: Hystrichosphaeridium