English: Palaeogeographical reorganization of the Tethys–Paratethys region during the Paleogene, from a connected Tethys configuration during the early Eocene (a) to a fragmented and restricted Paratethys region configuration during the Oligocene (b). Note the loss of deep-water connections between the Indian Ocean region and the Mediterranean,
the complete loss of Indian–Arctic Ocean connections, and the closure of most of the Eocene seaways in the Oligocene time.
Date
Source
Palcu, D. V & Krijgsman, W. The dire straits of Paratethys: gateways to the anoxic giant of Eurasia. Geol. Soc. London, Spec. Publ. 523, SP523-2021–73 (2023). doi:10.1144/SP523-2021-73
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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).