Blanco-Piñón, Alberto, Kenshu Shimada, and Gerardo González-Barba. 2018. “Lamnoid Vertebrae from the Agua Nueva Formation (Upper Cretaceous: Lower Turonian), Northeastern Mexico”. Revista Mexicana De Ciencias Geológicas 22 (1):19-23. https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/861.