Exochosphaeridium brevispinum

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"?brevispinum" Norvick, 1976, p.53, pl.4, figs.5-6. Holotype: Norvick, 1976, pl.4, figs.5-6. NOW Pervosphaeridium. Originally Exochosphaeridium, subsequently Exochosphaeridium?, thirdly (and now) Pervosphaeridium. Questionable assignment: Stover and Evitt (1978, p.154). Age: Cenomanian.

Parent: Exochosphaeridium

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