Hystrichosphaeridium grallaeforme
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"grallaeforme" Brosius, 1963, p.42, pl.5, fig.3; text-fig.2. Holotype: Brosius, 1963, pl.5, fig.3. NOW Achomosphaera. Originally Hystrichosphaeridium, subsequently (and now) Achomosphaera, thirdly Spiniferites (combination not validly published). Taxonomic junior synonym: Spiniferites solidago, according to Strauss et al. (2001, p.412). Age: Oligocene.
Parent: Hystrichosphaeridium
