What are Some Paleogene Organisms?
The Paleogene Period is a geologic period that stretches from 65.5 million years ago, when the dinosaurs were blasted into extinction by an asteroid, to 23 million years ago, when the period was concluded with an extended episode of global cooling. Compared to the present day, the Palogene was a warm time, and as such, is sometimes called “a continuation of the Mesozoic, but with mammals.” Just as during the Mesozoic, during the Paleogene, the world was warm, with no polar ice caps, and dense forests extended further north and south, to places like Wyoming. The Paleogene had high sea levels, but not as high as during the Cretaceous before it, and except for the flooding of large portions of central Eurasia, the configuration of the continents was pretty much the same as it is today. The Paleogene was characterized by the rapid diversification of mammals and the filling of numerous niches left open by the extinction of all non-avian dinosaurs, pterosaurs (flying reptiles), and large mar
