Alterbidinium ambiguum

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ambiguum (He Chengquan, 1991, p.72-73, pl.29, figs.1-6) Lentin and Williams, 1993, p.21.  Holotype: He Chengquan, 1991, pl.29, fig.3.  Originally Alterbia (generic name illegitimate), subsequently (and now) Alterbidinium.  Age: Cenomanian-Mid Eocene.

Parent: Alterbidinium