Achomosphaera pachyderma
From dinoflaj3
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