Alterbia acuminata

"acuminata" (Cookson and Eisenack, 1958, p.27, pl.4, figs.5-8) Lentin and Williams, 1976, p.48.  Holotype: Cookson and Eisenack, 1958, pl.4, fig.5.  Combination illegitimate: the generic name Alterbia is illegitimate.  NOW Isabelidinium.  Originally Deflandrea, subsequently Alterbia (combination illegitimate), thirdly Senegalinium, fourthly (and now) Isabelidinium.  Age: Cenomanian-Early Turonian.

Parent: Alterbia