Langenheim JH. Preliminary Notes on Plant Fossils from Late Paleozoic and Early Mesozoic Rocks in the Cordillera Oriental of Colombia. Bol. Geol. [Internet]. 8 de abril de 1959 [citado 25 de agosto de 2024];(3):51-3. Disponible en: https://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/4003