JURINA , A. L.; RASKATOVA, M. G. Svalbardia from Givetian of Central Russia (Voronezh Region): leaf morphology and spores from sporangium. Journal of Palaeosciences, [S. l.], v. 63, n. (1-2), p. 99–112, 2014. DOI: 10.54991/jop.2014.324. Disponível em: https://jpsonline.co.in/index.php/jop/article/view/324. Acesso em: 27 apr. 2024.