Lucas SG, Kues BS, Estep JW, González-León CM. Permian-Triassic boundary at El Antimonio, Sonora, Mexico. revmexcg [Internet]. 2018 Dec. 13 [cited 2025 Apr. 19];14(2):149-54. Available from: https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/1116