Xishadinium circulatum
From dinoflaj3
*circulatum He Chengquan et al., 2009, p.525,647, pl.16, figs.19–20. Holotype: Wall and Dale, 1968c, pl.4, fig.19, as cyst of Diplopsalis lenticula. Age: middle-late Pleistocene.
Parent: Xishadinium