Cleistosphaeridium laxabaculum
From dinoflaj3
"laxabaculum" Song Zhichen in Song Zhichen et al., 1985, p.31–32, pl.4, fig.11. Holotype: Song Zhichen et al., 1985, pl.4, fig.11. NOW Impletosphaeridium. Originally Cleistosphaeridium, subsequently (and now) Impletosphaeridium. Age: ?early Pleistocene.
Parent: Cleistosphaeridium