PERRILLIAT, María del Carmen; AVENDAÑO, Javier; VEGA, Francisco J. Middle Eocene Cypraeoideans from the San Juan Formation, Chiapas, southern Mexico. Revista Mexicana de Ciencias Geológicas, [S. l.], v. 20, n. 1, p. 41–51, 2018. Disponível em: https://www.rmcg.unam.mx/index.php/rmcg/article/view/954. Acesso em: 3 may. 2025.