It is believed that birds evolved from dinosaurs. An early bird called Archaeopteryx had wings and feathers, but it also looked a lot like a dinosaur with a snout instead of a beak. A team of scientists is studying what the beak was skeletally, functionally and when this major transformation occurred from a normal vertebrate snout to the very unique structures used in birds. They have created a chicken embryo with a dinosaur-like snout and palate, similar to that of small feathered dinosaurs like Velociraptor.
Full study here
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