BHARDWAJ, D. The spore genera from the Upper Carboniferous coal of the Saar and their value in stratigraphical studies. Journal of Palaeosciences, [S. l.], v. 4, p. 119–149, 1955. DOI: 10.54991/jop.1955.480. Disponível em: https://jpsonline.co.in/index.php/jop/article/view/480. Acesso em: 15 may. 2024.