Pervosphaeridium cenomaniense

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cenomaniense (Norvick, 1976, p.52–53, pl.4, figs.4,8) Below, 1982c, p.27.  Holotype: Norvick, 1976, pl.4, fig.4.  Originally Exochosphaeridium, subsequently Exochosphaeridium?, thirdly (and now) Pervosphaeridium.  Age: Cenomanian.

Parent: Pervosphaeridium