Oligocene

The Oligocene is the last geological epoch in the Palaeogene. It lasted for about 11 million years, from 34 million years ago to 23 million years ago. It was preceded by the Eocene and followed by the Miocene. During the Oligocene, the world continued to get cooler from its peak in the mid-Eocene. The world was still largely forested, but grasslands began to spread. Ice formed in Antarctica. The period is seen as one of transition, both in climate and in the biota.

Oligocene Media

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  Subdivisions of the Oligocene

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  Neotethys during the Oligocene (Rupelian, 33.9–28.4 mya)

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  Climate change during the last 65 million years

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  Restoration of Nimravus (far left) and other animals from the Turtle Cove Formation

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  Life restoration of Daeodon

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  Paraceratherium restored next to Hyaenodon

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  the giant indricotheres grew up to 6 meters (20 ft) at the shoulder and weighed up to 20 tons.

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  Eocene-Oligocene circum-Antarctic oceanic changes

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  Reconstruction of Aglaocetus moreni

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  esqueleto de Poebrotherium