Rottnestia borussica
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*borussica (Eisenack, 1954b, p.62, pl.9, figs.5a–b,6–7) Cookson and Eisenack, 1961b, p.42. Holotype: Eisenack, 1954b, pl.9, fig.5a–b. Originally Hystrichosphaera, subsequently (and now) Rottnestia, thirdly Triblastula, fourthly Hystrichosphaeropsis (combination not validly published). Eisenack (1969a, p.105–108) and Jan du Chêne et al. (1986a, p.309) retained this species in Rottnestia. Taxonomic junior synonym: Hystrichosphaeropsis jubata (name not validly published), according to May (1980, p.24). Age: early Oligocene.
Infrataxon List: