Hystrichosphaera biformis
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"biformis" Wiesner, 1936, p.154, pl.7, fig.9. Holotype: Wiesner, 1936, pl.7, fig.9. Name not validly published: generic name not validly published until 1937. NOW Hystrichosphaeridium?. Originally Hystrichosphaera (name not validly published), subsequently Hystrichosphaeridium, thirdly (and now) Hystrichosphaeridium?. Age: Late Cretaceous.
Parent: Hystrichosphaera