Exochosphaeridium cenomaniense
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"?cenomaniense" Norvick, 1976, p.52–53, pl.4, figs.4,8. Holotype: Norvick, 1976, pl.4, fig.4. NOW Pervosphaeridium. Originally Exochosphaeridium, subsequently Exochosphaeridium?, thirdly (and now) Pervosphaeridium. Questionable assignment: Stover and Evitt (1978, p.154). Age: Cenomanian.
Parent: Exochosphaeridium