EVOLUTIONARY PROCESSES IN THE FOSSIL RECORD: PATAGONIA AS A CASE STUDY (Invited Presentation)
This complex tectonic activity coupled with intense climatic changes turned Patagonia into a natural floristic laboratory in which examples of biogeographic and evolutionary processes were recorded. Such events include diversification, speciation, extinctions, disjunctions, co-evolution, expansions and retraction of geographic areas. In this presentation, we will present iconic examples of these evolutionary processes that occurred in Patagonia in relation to the geological and climatic variables. Examples of evolutionary processes comprise the extinction of Casuarianaceae, Eucalyptus, and Agathis, the retraction of Arecaceae and Ulmaceae, the diversification of Nothofagus, the typical disjunction of Winteraceae, Cunoniaceae, and Araucaria, the expansion of the grass steppe, the co-evolution of Nothofagaceae and Misodendraceae, and the speciation of Proteaceae.