Filkorn HF, Scott RW. Microfossils, paleoenvironments and biostratigraphy of the Mal Paso Formation (Cretaceous, upper Albian), State of Guerrero, Mexico. revmexcg [Internet]. 2018 Jan. 5 [cited 2025 May 3];28(1):175-91. Available from: https://www.rmcg.unam.mx/index.php/rmcg/article/view/619