Impletosphaeridium laxabaculum
From dinoflaj2
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
