Buitrón-Sánchez, Blanca Estela, and Jerjes Pantoja-Alor. “Early Cretaceous Mollusk-Perforating Sponges from Central-Western Region of Mexico”. Revista Mexicana de Ciencias Geológicas 11, no. 2 (February 16, 2019): 222–231. Accessed April 20, 2025. https://rmcg.unam.mx/index.php/rmcg/article/view/1186.