Rao, K.P., and C.G.K. Ramanujam. “Palynology of the Neogene Quilon Beds of Kerala State in South India I - Spores of Pteridophytes and Pollen of Monocotyledons”. Journal of Palaeosciences 25, no. 1-3 (December 31, 1976): 397–427. Accessed May 5, 2024. https://jpsonline.co.in/index.php/jop/article/view/1027.