Praecalcigonellum duopylum
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duopylum Willems, 1995b, p.146,148-150, figs.1a-e; fig.2, nos.1-6; fig.3, nos.1-7. Holotype: Willems, 1995b, fig.2, nos.1-4; fig.3, nos.5-6. Age: earliest Danian.
Parent: Praecalcigonellum