Weber R. How old is the Triassic flora of Sonora and Tamaulipas and news on Leonardian floras in Puebla and Hidalgo, Mexico. revmexcg [Internet]. 2019 Jan. 8 [cited 2025 May 3];14(2):225-43. Available from: https://www.rmcg.unam.mx/index.php/rmcg/article/view/1148