Alterbidinium rugulum

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