Andrade, Luiz Saturnino de, Afonso César Rodrigues Nogueira, and José Bandeira Cavalcante da Silva Junior. “ Evolution of a Permian Arid Lake System, Upper Pedra De Fogo Formation, Western Border of the Parnaiba Basin ”. Geologia USP. Série Científica 14, no. 4 (December 1, 2014): 39–60. Accessed April 14, 2025. https://revistas.usp.br/guspsc/article/view/95920.