100-mn-yr-old fossil shows how birds evolved from dinosaurs
Scientists have reconstructed the skull of extinct Ichthyornis dispar, which showed the bird species had dinosaur-like sharp teeth. Thought to have lived 66-100 million years ago, the species was one of the fossils Charles Darwin had hailed as evidence of evolution. It revealed that birds used beak as hand after the evolution of wings, said Yale University's Bhart-Anjan Bhullar.