NPR

How Did Birds Lose Their Teeth And Get Their Beaks? Study Offers Clues

Modern birds are dinosaurs without toothy jaws, and with bigger brains. Newly published research fills in some of the missing links in their evolution.
A CT-scan image of the skull of an ancient bird shows how one of the earliest bird beaks worked as a pincer, in the way beaks of modern birds do, but also had teeth left over from dinosaur ancestors. The animal, called <em>I</em><em>chthyornis</em>, lived around 100 million years ago in what is now North America.

Scientists are one step closer to understanding how modern birds evolved to have beaks, and the answer starts millions of years ago with some of the sexiest dinosaurs.

Modern gulls, with their large eyes, long beaks and distinctly ancient-looking and bony faces, descended from animals such as the velociraptor and Next time you get a hungry look from a seagull, remember that.) For more than a century, paleontologists have used how large, toothy, land-bound lizards evolved into flying, toothless, feathered animals.

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