From Fensome et al., 2019:
Exochosphaeridium rhopalophorum (Valensi, 1955a, p.36, fig.1C) Lentin and Williams, 1985, p.131. Holotype: Valensi, 1955a, fig.1C. Originally Hystrichosphaeridium, subsequently (and now) Exochosphaeridium. Age: Late Cretaceous.

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