Jaramillo, C. A.; Pardo-Trujillo, A.; Rueda, M.; Torres, V.; Harrington, G. J.; Mora, G. (2007). «The palynology of the Cerrejon Formation (upper Paleocene) of northern Colombia». Palynology31: 153-189. doi:10.2113/gspalynol.31.1.153.
Quintero, J. A.; Candela, S. A.; Rios, C. A.; Montes, C.; Uribe, C. (2009). «Spontaneous combustion of the Upper Paleocene Cerrejón Formation coal and generation of clinker in La Guajira Peninsula (Caribbean Region of Colombia)». International Journal of Coal Geology80 (3): 196-210. doi:10.1016/j.coal.2009.09.004.
Shellito, C. J.; Sloan, L. C.; Huber, M. (2003). «Climate model sensitivity to atmospheric CO2 levels in the Early–Middle Paleogene». Palaeogeography, Palaeoclimatology, Palaeoecology193: 113-123. doi:10.1016/S0031-0182(02)00718-6.
Kowalski, E. A.; Dilcher, D. L. (2003). «Warmer paleotemperatures for terrestrial ecosystems». Proceedings of the National Academy of Sciences100: 167-170. Bibcode:2002PNAS..100..167K. doi:10.1073/pnas.232693599.
Richardson, J. E.; Pennington, R. T.; Pennington, T. D.; Hollingsworth, P. M. (2001). «Rapid diversification of a species-rich genus of Neotropical rain forest trees». Science293 (5538): 2242-2245. Bibcode:2001Sci...293.2242R. PMID11567135. doi:10.1126/science.1061421.
Hastings, A. K; Bloch, J. I.; Cadena, E. A.; Jaramillo, C. A. (2010). «A new small short-snouted dyrosaurid (Crocodylomorpha, Mesoeucrocodylia) from the Paleocene of northeastern Colombia». Journal of Vertebrate Paleontology30 (1): 139-162. doi:10.1080/02724630903409204.
Kowalski, E. A.; Dilcher, D. L. (2003). «Warmer paleotemperatures for terrestrial ecosystems». Proceedings of the National Academy of Sciences100: 167-170. Bibcode:2002PNAS..100..167K. doi:10.1073/pnas.232693599.
Richardson, J. E.; Pennington, R. T.; Pennington, T. D.; Hollingsworth, P. M. (2001). «Rapid diversification of a species-rich genus of Neotropical rain forest trees». Science293 (5538): 2242-2245. Bibcode:2001Sci...293.2242R. PMID11567135. doi:10.1126/science.1061421.
Richardson, J. E.; Pennington, R. T.; Pennington, T. D.; Hollingsworth, P. M. (2001). «Rapid diversification of a species-rich genus of Neotropical rain forest trees». Science293 (5538): 2242-2245. Bibcode:2001Sci...293.2242R. PMID11567135. doi:10.1126/science.1061421.
Tewalt, S. J.; Finkelman, R. B.; Torres, I. E.; Simoni, F. (2006). «World Coal Quality Inventory: Colombia». En Alex W. Karlsen, Susan J. Tewalt, Linda J. Bragg, and Robert B. Finkelman (eds.), ed. World Coal Quality Inventory: South America. U.S. Geological Survey Open File Report 2006 (1241). United States Geological Survey. pp. 132-157.