Learn more about Morganucodon and Brasilodon, the two species that may have given life to the mammals we know today.

Understanding how early mammals looked helps us understand how they lived and when all the present diversity evolved, says Matthew Shawkey, co-senior study author and an evolutionary biologist at ...

Paleontologists made a recent discovery that'll shed light on what type of animals roamed the Earth millions of years ago. ...

The early mammals in this study — like many during the Mesozoic Era — were small creatures much like rodents, shrews or moles. They also appear to have had similarly gray and brown coats.

Early mammals, like Morganucodon, had relatively constant levels of growth, suggesting that their lives may have been more like today’s small reptiles. The shift towards a more modern lifestyle first ...

Early mammals grew much more slowly but lived substantially longer than today's small mammals, with lifespans of eight to fourteen years instead of just one or two as in modern mice, for example.

Humans are the only animal that lives in virtually every possible environment, from rainforests to deserts to tundra. That ...