Omaña, Lourdes, Jose Maria Pons, and Ruben Cruz. 2021. “Biostratigraphy and Paleoenvironment of Maastrichtian Foraminiferal Assemblages from a Succession Located NW of Tuxtla Gutiérrez, Chiapas (SE Mexico)”. Revista Mexicana De Ciencias Geológicas 38 (1):65-81. https://doi.org/10.22201/cgeo.20072902e.2021.1.1598.