HSU, J. Fossil plants from the K’uanshanch’ang coal series of North-Eastern Yunnan, China. Journal of Palaeosciences, [S. l.], v. 1, p. 245–262, 1952. DOI: 10.54991/jop.1952.411. Disponível em: https://jpsonline.co.in/index.php/jop/article/view/411. Acesso em: 15 may. 2024.