Paleontologists lack the fossils they need to trace the evolutionary history of the Amazon region, a region characterized by unparalleled biodiversity. By exploiting data from a site known for over a century, Juan Carrillo, a researcher at the University of Fribourg, and his colleagues from other institutions, have made exceptional discoveries that shed new light on this little-known past . The Amazon rainforest boasts incredible biodiversity, the result of a very long history punctuated by variations in climate and landscape. Like all tropical regions, it is characterized by a higher number of plant and animal species than anywhere else in the world. Fossils could help us to trace the thread of this evolution, but in these parts of tropical South America, there are few well-studied deposits. An exceptional fossil site. Rare, but not non-existent! In what is now known as the Tatacoa Desert, Colombia, lies the La Venta fossil site, well known to paleontologists.
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