Palaeohystrichodinium quadratum
From dinoflaj2
quadratum He Chengquan, Zhu Shenzhao and Jin Guangxing in He Chengquan et al., 1989, p.57, pl.16, figs.1-3. Holotype: He Chengquan et al., 1989, pl.16, fig.1. Age: Early Tertiary.
Parent: Palaeohystrichodinium
