Surculosphaeridium trunculum
From dinoflaj3
trunculum Davey, 1979b, p.559–560, pl.8, figs.6–9. Holotype: Davey, 1979b, pl.8, fig.7; Fauconnier and Masure, 2004, pl.74, figs.8–10. Age: Aptian–Albian.
Parent: Surculosphaeridium