Serrano-Brañas, Claudia Inés, and Elena Centeno-García. “Paleoenvironmental Interpretation Using Fossil Record: San Juan Raya Formation, Zapotitlán Basin, Puebla, Mexico”. Revista Mexicana de Ciencias Geológicas 31, no. 1 (February 25, 2015). Accessed June 8, 2025. https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/259.