Oligosphaeridium ovatum He Chengquan, Zhu Shenzhao and Jin Guangxing in He Chengquan et al., 1989, p.54, pl.19, figs. 18-22.
TYPE: Holotype: He Chengquan et al., 1989, pl.19, fig.20. AGE: Early Tertiary.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |