Lu Mengning and Wang Ruoshan, 1980
From dinoflaj3
Lu Mengning and Wang Ruoshan, 1980: The discovery of microflora from the Maantang Formation in the north-west Sichuan Basin and its significance. Acta Botanica Sinica, v.22, no.4, p.370-378, pl.1-3. (In Chinese with English summary.)