YI, W.; SHU, O.; CHONGYANG, C. Early Silurian microfossil plants from the upper part of the Xiushan Formation in Guizhou Province, China and their palaeobotanical significance. Journal of Palaeosciences, [S. l.], v. 45, p. 181–193, 1996. DOI: 10.54991/jop.1996.1232. Disponível em: https://jpsonline.co.in/index.php/jop/article/view/1232. Acesso em: 29 mar. 2024.