He Chengquan et al., 1992
From dinoflaj2
He Chengquan, Gao Ruiqi and Qiao Xiuyun, 1992: New Albian microphytoplankton from the Songliao Basin, northeast China. Acta Micropalaeontologica Sinica, v.9, no.2, p.183-196, pl.1-2.
