Isabelidinium rhombovale

?rhombovale (Cookson and Eisenack, 1970a, p.143, pl.12, figs.10-11) Lentin and Williams, 1977a, p.168.  Holotype: Cookson and Eisenack, 1970a, pl.12, fig.11.  Originally Deflandrea, subsequently Isabelia (combination illegitimate), thirdly Isabelidinium, fourthly (and now) Isabelidinium?.  Questionable assignment: Stover and Evitt (1978, p.109).  Age: Late Albian-Senonian.

Parent: Isabelidinium