Perrilliat, M. del C., Avendaño, J. and Vega, F. J. (2018) “Middle Eocene Cypraeoideans from the San Juan Formation, Chiapas, southern Mexico”, Revista Mexicana de Ciencias Geológicas, 20(1), pp. 41–51. Available at: https://www.rmcg.unam.mx/index.php/rmcg/article/view/954 (Accessed: 2 May 2025).