TIWARI, R.; RAM-AWATAR. Protoeusaccites gen. nov.- A case of transitionary, character-state in saccus structure in the late permian bisaccate pollen. Journal of Palaeosciences, [S. l.], v. 42, n. 1-3, p. 387–395, 1993. DOI: 10.54991/jop.1993.1159. Disponível em: https://www.jpsonline.co.in/index.php/jop/article/view/1159. Acesso em: 4 may. 2024.