Achomosphaera grallaeformis
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grallaeformis (Brosius, 1963, p.42, pl.5, fig.3; text-fig.2) Davey and Williams, 1969, p.4. Holotype: Brosius, 1963, pl.5, fig.3. 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). This combination was not validly published in Davey and Williams (1966b, p.104), since these authors did not fully reference the basionym. Age: Oligocene.
Parent: Achomosphaera