Oligocene mammals from Ethiopia and faunal exchange between Afro-Arabia and Eurasia. John Kappelman 1, D. Tab Rasmussen 3, William J. Sanders 4, Mulugeta Feseha 2, Thomas Bown 5, ...

They are considered the largest land mammal that ever lived — but their ... Ecological reconstruction of giant rhinos and their accompanying fauna in the Linxia Basin during the Oligocene.

After the extinction of dinosaurs came the age of mammals. A new book brings readers into this world with well-researched species profiles by Aaron Woodruff, collection manager for vertebrate ...

Mammals exploded in size after dinosaurs went extinct and continued to grow for about 25 million years, ... About 34 million years ago, during the early Oligocene epoch, ...

Now researchers have confirmed that an ancient dolphin that lived during the Oligocene Epoch — 33.9 million to 23 million years ago — was the first cetacean (a type of mammal) using ...

Thirty million years ago, over 60 percent of all mammals in Africa and the Arabian Peninsula went extinct. ... too, disappeared during the Eocene-Oligocene shift.

Their results show that all five mammal groups suffered huge losses around the Eocene-Oligocene boundary. "It was a real reset button," said Dorien de Vries, a postdoctoral researcher at the ...

The teeth De Vries is working with are up to 56 million years old—they once belonged to the mammals of the late Eocene, Oligocene, and Miocene Epochs and are now preserved in museum and ...

During the period of time these two mammals lived, said Burger, the world was transitioning from the tepid, hot-house conditions of the Eocene to much colder conditions in the Oligocene.

The maximum size of mammals began to increase sharply about 65 million years ago, peaking in the Oligocene Epoch (about 34 million years ago) in Eurasia, and again in the Miocene Epoch (about 10 ...

A discovery of mammal fossils uncovered in the Zallah Oasis in the Sirt Basin of central Libya date back to the early Oligocene, between about 30 and 31 million years ago. Working in the Zallah ...