Jain, K.P., and S.C.D. Sah. “Revision of Jurassic Spores and Pollen Grains from Andigama, Ceylon”. Journal of Palaeosciences 14, no. (1-3) (December 31, 1965): 106–115. Accessed May 13, 2024. https://jpsonline.co.in/index.php/jop/article/view/723.