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Hystrichosphaeridium simplex

Hystrichosphaeridium simplex (White, 1842) Deflandre, 1946

Now Dapsilidinium simplex. Originally Xanthidium tubiferum var. simplex, subsequently Xanthidium simplex, thirdly Hystrichosphaeridium simplex, fourthly Polysphaeridium? simplex, fifthly (and now) Dapsilidinium simplex.
Holotype: White, 1842, pl.4, fig.10
Age: Late Cretaceous

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