Deflandrea extrema
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"extrema" Cookson and Eisenack, 1974, p.48, pl.20, fig.4. Holotype: Cookson and Eisenack, 1974, pl.20, fig.4. NOW Isabelidinium?. Originally Deflandrea, subsequently Spongodinium?, thirdly (and now) Isabelidinium?. Age: Albian-Cenomanian.
Parent: Deflandrea
