Impletosphaeridium laxabaculum

laxabaculum (Song Zhichen in Song Zhichen et al., 1985, p.31–32, pl.4, fig.11) Islam, 1993, p.86.  Holotype: Song Zhichen et al., 1985, pl.4, fig.11.  Originally Cleistosphaeridium, subsequently (and now) Impletosphaeridium.  Age: ?early Pleistocene.

Parent: Impletosphaeridium