Alvarado-Ortega, Jesús, and Héctor Gerardo Porras-Múzquiz. “On the Presence of Xiphactinus (Teleostei, Ichthyodectiformes) in the Coniacian-Campanian Marine Deposits of the Piedritas Site, Coahuila, Northern Mexico”. Revista Mexicana De Ciencias Geológicas, vol. 39, no. 2, July 2022, pp. 142-50, doi:10.22201/cgeo.20072902e.2022.2.1684.