Cordosphaeridium brevitubulosum
From dinoflaj3
brevitubulosum He Chengquan, 1991, p.166,214, pl.13, figs.9–12; text-fig.39. Holotype: He Chengquan, 1991, pl.13, fig.12; text-fig.39. He Chengquan (1991, p.165,213) designated this species as the "type species" of Cordosphaeridium subgenus Tarimocystium. Age: middle Eocene.
Parent: Cordosphaeridium