Ferrusquía-Villafranca I, Applegate SP, Espinosa-Arrubarrena L. First Paleogene selachifauna of the middle American-Caribbean Antillean region, La Mesa de Copoya, west-central Chiapas, Mexico—Geologic setting. revmexcg [Internet]. 2018 Jul. 9 [cited 2025 May 20];17(1):1-23. Available from: https://www.rmcg.unam.mx/index.php/rmcg/article/view/1014