Vega FJ, García-Barrera P, Perrilliat M del C, Coutiño MA, Mariño-Pérez R. El Espinal, a new plattenkalk facies locality from the Lower Cretaceous Sierra Madre Formation, Chiapas, southeastern Mexico. revmexcg [Internet]. 2018 Apr. 19 [cited 2025 May 10];23(3):323-3. Available from: https://rmcg.unam.mx/index.php/rmcg/article/view/821