Lacunodinium fissilis (Jiabo, 1978, p.100-101, pl.35, figs.3-9) He Chengquan, Zhu Shenzhao and Jin Guangxing in He Chengquan et al., 1989, p.49, pl.7, figs.27-30. Emendation: Mao Shaozhi et al., 1995, p.43, as Lacunodinium fissile.

Originally Hungarodiscus (Acritarch), subsequently (and now) Lacunodinium.
Taxonomic junior synonym: Hungarodiscus foveolatus (Acritarch), according to Mao Shaozhi et al. (1995, p.43).

Holotype: Jiabo, 1978, pl.35, fig.4
Age: Oligocene