Phthanoperidinium tenellum
From dinoflaj3
tenellum Jin Guangxing, He Chengquan and Zhu Shenzhao in He Chengquan et al., 1989, p.62–63, pl.6, fig.22. Holotype: He Chengquan et al., 1989, pl.6, fig.22. Age: Early Tertiary.
Parent: Phthanoperidinium