Geiselodinium sphaericum
From dinoflaj2
"sphaericum" (Yu Jingxian et al., 1981, p.259, pl.1, figs.1-2,6) Chen et al., 1988, p.28. Emendation: Mao Shaozhi et al., 1995, p.52, as Sanshuia sphaerica. Holotype: Yu Jingxian et al., 1981, pl.1, fig.1. NOW Sanshuia. Originally (and now) Sanshuia, subsequently Geiselodinium, thirdly Saeptodinium. Age: Late Cretaceous.
Parent: Geiselodinium
