He Chengquan and Sun Xuekun, 2000
From dinoflaj3
He Chengquan and Sun Xuekun, 2000: Late Hauterivian dinoflagellates from the lower part of the Chengzihe Formation in Jixi Basin, eastern Heilongjiang, NE China. Acta Palaeontologica Sinica, v.39, no.1, p.46-62, pl.1-3.