Qian Zeshu et al., 1986
From dinoflaj2
Qian Zeshu, Chen Yongxiang and He Chengquan, 1986: Palaeocene-Eocene non-marine microphytoplankton from Dongtai Depression, northern Jiangsu. Acta Palaeontologica Sinica, v.25, no.1, p.17-29, pl.1-3. (In Chinese.)
