A 62-million-year-old mammal fossil reveals its tree-dwelling lifestyle, plant-based diet, and evolutionary ties to primates ...

As the planet warmed and glacial ice retreated, ecosystems underwent rapid shifts. Some species may have struggled to adapt to new environments, leading to their eventual decline. However ...

Mixodectes pungens, a species of small mammal that inhabited western North America in the early Paleocene, was a mystery.

Perhaps the most puzzling question Jared Diamond encounters as he investigates animal domestication is: Why were no large mammals ever domesticated in tropical Africa? Africa, south of the Sahara ...

Carbon-dating teeth suggests two large mammal species roamed northeastern Brazil 3,500 years ago Geologist Fábio Faria and colleagues carbon-dated eight fragments of megafauna teeth of different ...