Cordosphaeridium vulgatum
From dinoflaj2
vulgatum Zheng Yuefang and Liu Xuexian in Liu Zhili et al., 1992, p.64-65, pl.13, figs.10-13. Holotype: Liu Zhili et al., 1992, pl.13, fig.13. Age: early Tertiary.
Parent: Cordosphaeridium