Omaña L, González-Arreola C, Ramírez-Garza BM. Barremian planktonic foraminiferal events correlated with the ammonite zones from the San Lucas Formation, Michoacán (SW Mexico). revmexcg [Internet]. 2018 May 7 [cited 2025 May 2];22(1):88-96. Available from: https://www.rmcg.unam.mx/index.php/rmcg/article/view/875