Impletosphaeridium densum
From dinoflaj3
densum (He Chengquan and Li Peng, 1981, p.65, pl.31, figs.14–17; text-fig.6) He Chengquan and Wang Kede, 1990, p.413. Holotype: He Chengquan and Li Peng, 1981, pl.31, fig.14; text-fig.6. Originally Impletosphaeridium polypes subsp. densum, subsequently Kiokansium polypes subsp. densum, thirdly (and now) Impletosphaeridium densum. He Chengquan (1991, p.142) also proposed this combination. Age: late Oligocene.
Parent: Impletosphaeridium