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Pervosphaeridium elegans
From Fensome et al., 2019:
Pervosphaeridium elegans Louwye, 1997, p.152, pl.2, figs.10–11. Holotype: Louwye, 1997, pl.2, figs.10–11. Taxonomic junior synonym: Cleistosphaeridium hallembayense (name not validly published), according to Slimani (2001a, p.193). Age: Campanian.
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Original description (Louwye, 1997):
Pervosphaeridium elegans Louwye, 1997, p.152, pl.2, figs.10–11. Holotype: Louwye, 1997, pl.2, figs.10–11. Taxonomic junior synonym: Cleistosphaeridium hallembayense (name not validly published), according to Slimani (2001a, p.193). Age: Campanian.
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Original description (Louwye, 1997):