Charlesdowniea rhomboidalis

"rhomboidalis" (He Chengquan, 1991, p.93, pl.35, figs.11–13) Lentin and Williams, 1993, p.94.  Holotype: He Chengquan, 1991, pl.35, figs.11–12.  NOW Michouxdinium? Originally Kisselevia, subsequently Charlesdowniea, thirdly (and now) Michouxdinium? Age: middle Eocene

Parent: Charlesdowniea