Bajpai, Usha. “Glossopteris Shailae, a New Fossil Leaf from Upper Permian (Raniganj Formation) of India”. Journal of Palaeosciences 35, no. (1-3) (December 31, 1986): 159–164. Accessed November 23, 2024. https://jpsonline.co.in/index.php/jop/article/view/1522.