IFRIM, Christina; STINNESBECK, Wolfgang; SCHAFHAUSER, Armin. Maastrichtian shallow-water ammonites of northeastern Mexico. Revista Mexicana de Ciencias Geológicas, [S. l.], v. 22, n. 1, p. 48–64, 2018. Disponível em: https://rmcg.unam.mx/index.php/rmcg/article/view/873. Acesso em: 15 mar. 2025.