Hystrichosphaera borussica

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"borussica" Eisenack, 1954b, p.62, pl.9, figs.5a–b,6–7.  Holotype: Eisenack, 1954b, pl.9, fig.5a–b.  NOW Rottnestia.  Originally Hystrichosphaera, subsequently (and now) Rottnestia, thirdly Triblastula, fourthly Hystrichosphaeropsis (combination not validly published).  Taxonomic junior synonym: Hystrichosphaeropsis jubata (name not validly published), according to May (1980, p.24).  Age: early Oligocene.

Parent: Hystrichosphaera