Alterbidinium bicellulum

?bicellulum (Islam, 1983b, p.335–336, pl.1, figs.6–7) Lentin and Williams, 1985, p.14.  Holotype: Islam, 1983b, pl.1, fig.6.  Originally Alterbia (generic name illegitimate), subsequently (and now) Alterbidinium?.  Questionable assignment: Lentin and Williams (1985, p.14).  Age: middle Eocene.

Parent: Alterbidinium