Blanco-Piñón, Alberto, Kenshu Shimada, and Gerardo González-Barba. “Lamnoid Vertebrae from the Agua Nueva Formation (Upper Cretaceous: Lower Turonian), Northeastern Mexico”. Revista Mexicana de Ciencias Geológicas 22, no. 1 (April 25, 2018): 19–23. Accessed March 15, 2025. https://rmcg.unam.mx/index.php/rmcg/article/view/861.