Tapirs are often called “living fossils” because they have changed very little since the Eocene Epoch, which was between 56 ...

Brontotheres started out as dog-size animals, ... the enormous, rhino-like herbivorous mammals that lumbered across North America and Asia during the Eocene Epoch.

But in the early Eocene epoch, their ancestors were only about the size of a Border Collie. Yet somehow, in the span of a mere 20 million years, species weighing over 1 metric ton would become a ...

During the Eocene epoch, most marine resources would have been at the bottom of the ocean, says co-author Rodolfo Salas-Gismondi, a palaeontologist at Cayetano Heredia University in Lima.

The rhinoceros-like creature was a member of the Brontothere group, which all died out at the end of the Eocene epoch, according to the American Museum of Natural History. That was about 34 ...

Amson's team used 3D scans, holotypes and references to more complete whales from the same period to create a skeletal estimation. Scientists believe the Perucetus colossus lived approximately 40 ...

Brontotheres started out as dog-size animals, ... Megacerops coloradensis (background), one of the last giants, survived until the end of the Eocene Epoch. Oscar Sanisidro.

Brontotheres started out as dog-size animals, ... Megacerops coloradensis (background), one of the last giants, survived until the end of the Eocene Epoch. Oscar Sanisidro.