Omaña, Lourdes, Iriliana López-Caballero, and Fernando Nuñez-Useche. 2022. “A Late Aptian Planktic Foraminiferal Assemblage and Pyrite Framboids from the ‘Otates Horizon’, Cerro Boludo, Hidalgo, Mexico: Paleoecological and Paleoenvironmental Implications”. Revista Mexicana De Ciencias Geológicas 39 (1):71-81. https://doi.org/10.22201/cgeo.20072902e.2022.1.1672.