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Hystrichosphaeridium duplum ssp. parvum

Hystrichosphaeridium duplum ssp. parvum (Rozen, 1965) Lentin and Williams, 1989

Name illegitimate, since the species name Hystrichosphaeridium duplum is illegitimate.
Now Hystrichosphaeridium recurvatum ssp. parvum. Originally Hystrichosphaeridium recurvatum var. parvum, subsequently (and now) Hystrichosphaeridium recurvatum ssp. parvum, thirdly Hystrichosphaeridium palmatum ssp. parvum (name illegitimate), fourthly (and now) Hystrichosphaeridium duplum ssp. parvum (name illegitimate).

Holotype: Rozen, 1965, pl.4, fig.6, text-fig.13
Age: Late Eocene
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