Hystrichosphaeridium transculentum
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"?transculentum" Sah et al., 1970, p.147, pl.2, figs.18-19. Holotype: Sah et al., 1970, pl.2, fig.18. NOW Achomosphaera. Originally Hystrichosphaeridium, subsequently Hystrichosphaeridium?, thirdly (and now) Achomosphaera. Questionable assignment: Stover and Evitt (1978, p.56) as a problematic species. Age: Late Cretaceous.
Parent: Hystrichosphaeridium
