Shandongidium retirugosum
From dinoflaj2
"retirugosum" Xu Jinli et al., 1997, p.57, pl.6, figs.3-4,5a-b,8. Holotype: Xu Jinli et al., 1997, pl.6, fig.8. Name not validly published: no English or Latin description. Age: Mid-Late Eocene.
Parent: Shandongidium
