SINGH, S. M. Seeds, fructifications, bracts and calamitalean axes from the Karanpura and Bokaro Group of coalfields. Journal of Palaeosciences, [S. l.], v. 51, n. (1-3), p. 73–79, 2002. DOI: 10.54991/jop.2002.1735. Disponível em: https://jpsonline.co.in/index.php/jop/article/view/1735. Acesso em: 22 nov. 2024.