Author	Qiao Xiuyun, He Chengquan and Gao Ruiqi
Year	1992
Journal	Acta Palaeontologica Sinica, v.31, no.1, p.30-38, pl.1-3.
Title	Early Cretaceous freshwater dinoflagellates from Songliao Basin, NE China.

Abstract Qiao Xiuyun, He Chengquan and Gao Ruiqi, 1992: Early Cretaceous freshwater dinoflagellates from Songliao Basin, NE China; Acta Palaeontologica Sinica, v.31, no.1, p.30-38, pl.1-3. (In Chinese with English summary.)