While modern birds have beaks for eating, their ancient ancestors still had toothsome mouths, full of the sharp dental legacies of their dinosaur past. Paleontologists have discovered a new species of early bird
, though, and rather than getting the worm, it seemed to prey on hard-shelled animals like snails and crabs. That left it with an evolutionary first -- a mouthful of teeth meant for crushing prey, not tearing flesh.
It's an unexpected discovery, suggesting that even as some birds were losing their teeth to evolution, others were developing new kinds of teeth to help them become more specialized hunters.