Surange, K.R., and Shaila Chandra. “Dictyopterridium Sporiferum Feistmantel - Female Cone from the Lower Gondwana of India”. Journal of Palaeosciences 20, no. 1-3 (December 31, 1971): 127–136. Accessed May 16, 2024. https://www.jpsonline.co.in/index.php/jop/article/view/890.