Porras-Múzquiz, H. G., & Lehman, T. M. (2014). A ceratopsian horncore from the Olmos Formation (early Maastrichtian) near Múzquiz, Mexico. Revista Mexicana De Ciencias Geológicas, 28(2). Retrieved from https://rmcg.unam.mx/index.php/rmcg/article/view/202