Alterbidinium rugulum
From dinoflaj3
rugulum Iakovleva and Kulkova, 2001, p.16, pl.8, figs.8,12–14; text-fig.10. Holotype: Iakovleva and Kulkova, 2001, pl.8, figs.8,12–14. Age: early Eocene (Ypresian).
Parent: Alterbidinium