Cleistosphaeridium baculatum, He Chengquan and Li Peng, 1981, p.62, pl.34, figs.21-22.

Holotype: He Chengquan and Li Peng, 1981, pl.34, fig.21; Fauconnier and Masure, 2004, pl.4, fig.7.
Age: Late Oligocene