Rao, K. and Ramanujam, C. 1976. Palynology of the Neogene Quilon beds of Kerala state in South India I - Spores of pteridophytes and pollen of monocotyledons. Journal of Palaeosciences. 25, 1-3 (Dec. 1976), 397–427. DOI:https://doi.org/10.54991/jop.1976.1027.