Leanza, H. A., Volkheimer, W., Hugo, C. A., Melendi, D. L., & Rovere, E. I. (2002). Lacustrine black shales near to the Paleogene - Neogene boundary in north-western Neuquén Province: palynological evidence. Revista De La Asociación Geológica Argentina, 57(3), 280-288. Retrieved from https://revista.geologica.org.ar/raga/article/view/736