Oligocene Europe

thumb|right|alt=Palaeogeographical reorganization of the Tethys–Paratethys region during the Paleogene, from a connected Tethys configuration during the early Eocene (above) to a fragmented and restricted Paratethys region configuration during the Oligocene (below).|Palaeogeographical reorganization of the Tethys–Paratethys region during the Paleogene, from a connected Tethys configuration during the early [[Eocene (above) to a fragmented and restricted Paratethys region configuration during the Oligocene (below). Note the loss of deep-water connections between the Indian Ocean region and the