Researchers explore how chewing affects teeth on the nanoscale

Food leaves permanent traces on teeth. Cows chewing on grass, tigers tearing up a piece of raw meat and humans munching on tortilla chips all end up with tiny scratches and nicks on the enamel of their teeth. Examining these ...

Millions of years of evolutionary history recorded in teeth

"Show me your teeth and I'll tell you who you are." These words, attributed to 19th-century naturalist George Cuvier, couldn't be more correct. The pearly whites we use every day over and over and over again are clues not ...

The evolution of the baleen in whales

Baleen whales, such as the gigantic 30m-long blue whale, are the largest animals that have ever lived on this planet. They even beat the largest of the dinosaurs. But, ironically, the secret to their success lies in their ...

Tiny new fossil crocodile-relative had mammal-like teeth

In the dinosaur-rich fossil beds of Morocco, dated to about 100 million years ago, scientists have discovered a strange new crocodile. A fossil was found of an upper and lower jaw preserved together, with oddly shaped teeth. ...

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