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Dinosaur's Digits Show How Birds Got Wings Thursday, June 18, 2009 - Anuradha Menon Home >> Headlines >> General Science   
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Birds are generally considered to be the living descendants of dinosaurs, yet differences between bird wings and dinosaur hands have long left palaeontologists struggling to explain how birds would have evolved from their dinosaur ancestors. Birds' wings are thought to form from the fusion of the second, third and fourth digits on their hands as the embryo develops. Theropods, the predominantly carnivorous dinosaurs that included tyrannosaurids such as Tyrannosaurus rex. (source: nature.com)
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