In "Prehistoric World: Over 1,200 Incredible Mammals and Discoveries from the Mesozoic and Cenozoic," readers will learn about the warm-blooded animals that rose to prominence once the dinosaurs ...

Most mammals on the African ark began to disappear around 20 million years ago, after Africa came into contact with the rest of the world again. But Africa wasn't the only ark. An ancient seaway ...

Caption Rugosodon is the earliest-known fossil skeleton of the multituberculate mammals, a major lineage of extinct mammals from the Jurassic to the Eocene. The skeletal features suggest that it ...

An curved arrow pointing right. After dinosaurs went extinct, things were still pretty big. During the rise of the mammals, enormous creatures roamed the Earth. These monsters would go on to ...

The malleus, incus, and stapes—three small bones in the middle ear commonly referred to as the hammer, anvil, and stirrup—help make mammals more sensitive to sound. The bones started out as part of ...

Humans' outer ears may have evolved from the gills of prehistoric fish ... which are unique to mammals. "When we started the project, the evolutionary origin of the outer ear was a complete ...