FERRUSQUIA-VILLAFRANCA, Ismael; APPLEGATE, Shelton P.; ESPINOSA-ARRUBARRENA, Luis. First Paleogene selachifauna of the middle American-Caribbean Antillean region, La Mesa de Copoya, west-central Chiapas, Mexico—systematics and paleontological significance. Revista Mexicana de Ciencias Geológicas, [S. l.], v. 16, n. 2, p. 155–174, 2018. Disponível em: https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/1066. Acesso em: 20 apr. 2025.