LOWER PERMIAN SPHENOPHYLLS FROM CHUBUT, ARGENTINA. Ameghiniana, [S. l.], v. 30, n. 3, p. 225–243, 2013. Disponível em: https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/2158. Acesso em: 7 sep. 2025.