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