Alterbia ambigua
From dinoflaj3
"ambigua" He Chengquan, 1991, p.72–73, pl.29, figs.1–6. Holotype: He Chengquan, 1991, pl.29, fig.3. NOW Alterbidinium. Originally Alterbia (generic name illegitimate), subsequently (and now) Alterbidinium. Following I.C.N. Article 55.1, the species name Alterbia ambigua is validly published even though the generic name Alterbia is illegitimate. Age: Cenomanian–middle Eocene.
Parent: Alterbia