López, Sandra, Eliana Cañola, Gloria Toro, Bernardo Pulgarín, and Michel Hermelín. 2012. “STRATIGRAPHY OF THE CHAGARTON MEMBER OF THECOCONUCOS FORMATION”. Boletín De Geología 33 (1). https://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/2479.