Hystrichosphaeridium assamicum

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?assamicum Sah et al., 1970, p.146–147, pl.2, figs.20–21.  Holotype: Sah et al., 1970, pl.2, fig.20.  Originally Hystrichosphaeridium, subsequently (and now) Hystrichosphaeridium?.  Questionable assignment: Stover and Evitt (1978, p.56) as a problematic species.  Jain (1982, p.52) recommended that this name be restricted to the holotype.  Age: Late Cretaceous.

Parent: Hystrichosphaeridium