Tetranguladinium opimum Appendix A

opimum He Chengquan, Zhu Shenzhao and Jin Guangxing in He Chengquan et al., 1989, p.71, pl.20, fig.18.  Holotype: He Chengquan et al., 1989, pl.20, fig.18.  Age: Early Tertiary.

Parent: Tetranguladinium_Appendix A