Sentusidinium conispinosum Xu Jinli et al., 1997, p.47, pl.34, figs.6a–b; pl.35, figs.14a–b,16a–b; pl.36, figs.15a–b ex He Chengquan et al., 2009, p.662. Holotype: Xu Jinli et al., 1997, pl.35, figs.16a–b. The name was not validly published in Xu Jinli et al. (1997), since they did not provide an English or a Latin description: He Chengquan et al. (2009, p.662) validated it by publishing a diagnosis in English. Age: Oligocene.