Humans do not have tails, but do we have “what it takes” for a tail? Hens don’t have teeth, but they have the genes for it. With atavism, it is as if our genomes serve as archives of our ...

Learn how a variety of tooth shapes drove evolution across multiple kinds of mammals.

And because they’re eating different foods, they need different types of teeth.’ Serrated teeth have a jagged edge ... understand how they might have interacted with their ecosystem,’ Emma explains.

Researchers have uncovered why the formidable teeth of saber-toothed predators like Smilodon were evolutionarily advantageous ...

There are at least eight different species of hammerhead shark, and while fossil teeth evidence suggests that their ancestors may have existed 45 million years ago, molecular data points to a much ...

Sabre-toothed predators -- best know from the infamous Smilodon -- evolved multiple times across different mammal groups. A new study reveals why: these teeth were 'functionally optimal' and highly ...