Hystrichosphaeridium alcicornu

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"alcicornu" Eisenack, 1954b, p.65, pl.10, figs.1-2; text-fig.5.  Holotype: Eisenack, 1954b, pl.10, fig.2.  NOW Achomosphaera.  Originally Hystrichosphaeridium, subsequently (and now) Achomosphaera.  Taxonomic junior synonyms: Galea lychnea and Hystrichosphaeridium leptodermum, both according to Sarjeant (1983, p.100-101).  Age: Oligocene.

Parent: Hystrichosphaeridium