Mune, Sandra Eiko, Rajni Tewari, and Mary E.C. Bernardes-de-Oliveira. “Pennsylvanian Megaspores from Northeastern Border of the Paraná Basin, Brazil: Correlation With Indian Gondwana Megaspores”. Journal of Palaeosciences 61, no. (1-2) (December 31, 2012): 1–26. Accessed April 28, 2024. https://www.jpsonline.co.in/index.php/jop/article/view/346.