MAITHY, P. Revision of the lower gondwana Sphenopteris from India. Journal of Palaeosciences, [S. l.], v. 21, n. (1-3), p. 70–80, 1972. DOI: 10.54991/jop.1972.1472. Disponível em: https://www.jpsonline.co.in/index.php/jop/article/view/1472. Acesso em: 17 may. 2024.