Shandongidium *ellipticum Xu Jinli et al., 1997, p.55,148, pl.4, figs.6a–b,7a–b,8a–b,9a–b,10a–b,11a–b; pl.50, figs.1–4; pl.51, figs.2,3a–b; text-fig.3. Holotype: Xu Jinli et al., 1997, pl.4, figs.6a–b. Age: middle-late Eocene.