Carlos Jaramillo

Paula Mejia Velasquez

Paula Mejia

Paula Mejia


Paleobotany and Palynology Lab
Florida Museum of Natural History
PO Box 117800
Gainesville FL 32611


Current - PhD candidate in Biology/Geology - University of Florida. Gainesville, FL, USA.
2007 - M.Sc. in Botany - University of Florida. Gainesville, FL, USA.
2004 - B.S. Biology - Universidad de Antioquia. Medellin, Colombia.

Major interests

Radiation and diversification patterns of angiosperms in the tropics during the Lower Cretaceous, origin and evolution of tropical rainforest, Cretaceous biostratigraphy of angiosperm pollen and other plant groups, paleoclimatic reconstructions of Cretaceous environments.

Current Research

The main objective of my research is to determine the floristic composition (abundance and diversity) of several tropical sites (Colombia, Peru and Brazil) through the use of quantitative palynology. With this information I will be able to determine floristic patterns of different plant groups in the tropics and infer major climatic conditions of tropical latitudes during the early radiation of flowering plants (using abundance of climate indicator species). The next step is to determine how the floristic composition of tropical latitudes compares to the composition of ecosystems in high latitudes and test the presence of a latitudinal diversity gradient for different plants groups during the Lower Cretaceous.

Paula Mejia

Major positions held

Consultant - Smithsonian Tropical Research Institute (STRI) Jaramillo Lab and Colombian Institute of Petroleum (ICP) - 2010.

Intern - Smithsonian Tropical Research Institute, Jaramillo Lab Panama City, Panama –2009, 2006, 2005.

Research assistant - Laboratory of Paleobotany, University of Florida, Gainesville, FL – 2007, 2004-2005.

Research assistant - Laboratory Micropaleontology, Colombian Institute of Petroleum (ICP), Bucaramanga, Colombia – 2003-2004.

Research assistant - Herbarium HUA. Universidad de Antioquia. Medellin, Colombia - 2000-2003.

Young researcher - Laboratory of research in the Chagas disease, Universidad de Antioquia, Medellin, Colombia – 2000-2001.

Teaching experience

Integrated Principles of Biology Laboratory BSC 2010 - University of Florida, Department of Biology, Gainesville, FL – 2005-2008


Mejia-Velasquez P., Dilcher, D., Jaramillo C., Fortini L. and Manchester S. Palynological composition of a low latitude tropical site during the Lower Cretaceous: climatic and floristic implications – Submitted to American Journal of Botany.

Paula Mejia

Published abstracts

Mejia-Velasquez P.,D., Manchester S. and Jaramillo C. Preliminary results of the floristic and climatic reconstruction of the Oriente Formation (Peru) during the period of early angiosperm diversification. 14th Latin American Geological Congress and 13th Colombian Geological Congress. 2011, Medellin, Colombia.

Mejia Velasquez P., Dilcher, D., Jaramillo C., Fortini L. and Manchester S. Reconstrucción florística y climática de los ecosistemas tropicales de Colombia durante el Cretácico Inferior. 6th Colombian Botanical Congress. 2011, Cali, Colombia.

Mejia-Velasquez P., Dilcher, D., Jaramillo C., and Manchester S.Was there a latitudinal diversity gradient for flowering plants during the Lower Cretaceous? Geological Society of America (GSA) Annual Meeting and Exposition. 2010, Denver, Colorado.

Mejia P., Dilcher, D.L. and Jaramillo, C. A. 2008. Floral composition of a Lower Cretaceous paleotropical ecosystem inferred from quantitative palynology. 40th Annual AASP meeting, Panama City, Panama. Palynology 32: 264.

Mejia, P., Dilcher, D.L. and Jaramillo, C. A. 2006. Early angiosperm evolution in tropical latitudes. 38th Annual AASP meeting, St Louis, Missouri. Palynology 30: 222.

Mejia P., Dilcher, D., Jaramillo C. Diversification of angiosperms in the tropics: Lower Cretaceous palynomorphs from the Caballos Fm. 22th Mid Continent Paleobotanical Colloquium. 2005, Georgia College & State University, Miledgville, GA

Mejia, P. and Jaramillo, C.A. 2004. Do tropical floodplains from the Aptian contain less angiosperms than tropical floodplains from the Maastrichtian? XI IPC, Grenada, Spain. Polen 14: 448.