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Impletosphaeridium nanus
From Fensome et al., 2019:
Impletosphaeridium nanus (Rozen, 1965, p.311, pl.2, figs.7–8; text-fig.21) Islam, 1993, p.86. Holotype: Rozen, 1965, pl.2, figs.7–8. Originally Cordosphaeridium microtriainum var. nanus, subsequently Cordosphaeridium microtriainum subsp. nanus, thirdly Cleistosphaeridium? nanus, fourthly (and now) Impletosphaeridium nanus. NIA. Age: Late Eocene.
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Impletosphaeridium nanus (Rozen, 1965, p.311, pl.2, figs.7–8; text-fig.21) Islam, 1993, p.86. Holotype: Rozen, 1965, pl.2, figs.7–8. Originally Cordosphaeridium microtriainum var. nanus, subsequently Cordosphaeridium microtriainum subsp. nanus, thirdly Cleistosphaeridium? nanus, fourthly (and now) Impletosphaeridium nanus. NIA. Age: Late Eocene.
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