Federico Agnolin is a researcher at CONICET in Argentina and a Doctorate on Natural Sciences. Federico Agnolin is currently working on diverse topics about fossil vertebrates, particularly dinosaurs and Paleogene faunas from South America. Particularly, he was always interested on the palaeobiogeographical relationships of latest Cretaceous-Paleogene faunas from South America with those of other continents. In this regard I have published several works on high impact journals (as Nature, Scientific Reports, Naturwissenchaften, Journal of Vertebrate Paleontology, Systematic Biology, Journal of Mammalian Evolution, Cretaceous Research, etc) that deal with the geographic distribution of South American vertebrates.