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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
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