Achomosphaera pachyderma
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pachyderma Heilmann-Clausen in Heilmann-Clausen and Thomsen, 1995, p.287-288, pl.10, figs.5-10. Holotype: Heilmann-Clausen and Thomsen, 1995, pl.10, figs.5-6. Age: Early Aptian.
Parent: Achomosphaera