PORRAS-MÚZQUIZ, Héctor Gerardo; LEHMAN, Thomas M. A ceratopsian horncore from the Olmos Formation (early Maastrichtian) near Múzquiz, Mexico. Revista Mexicana de Ciencias Geológicas, [S. l.], v. 28, n. 2, 2014. Disponível em: https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/202. Acesso em: 18 apr. 2025.