There are about 170 modern ruminant hoofed mammal species with headgear, and many more in the fossil record. The headgear we see today comes in four types—antlers, horns, ossicones, and ...

Springer's data, in other words, indicate that the most recent common ancestor of placental mammals is Gondwanan. Contrary to more than a century of northern chauvinism, the northern continents ...

We share a common ancestor. Those in Chordata have backbones. So, this will also include birds, dogs, cats, cows and many other animals.” If two or more species trace their history back to the s ...

A common ancestor explains how mammals got five fingers, but it doesn't tell us why. One theory is canalization — the idea that over time, a gene or trait becomes more stable and less likely to ...

And it’s also home to the oldest known remains of a gorgonopsian, an important ancestor of modern mammals — a fact that could change our understanding of their migration and evolutionary history.

All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA. A new study suggests that this organism likely lived on Earth only 400 million years after its formation.