MAASTRICHTIAN MICROFOSSILS OF THE SHALLOW MARINE UMIR FORMATION, NE COLOMBIA . Ameghiniana, [S. l.], v. 60, n. 4, p. 297–311, 2023. DOI: 10.5710/AMGH.02.03.2023.3525. Disponível em: https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/3525. Acesso em: 4 oct. 2025.