Dinos with down coats.
This supports a theory that some dinosaurs evolved a feathery covering to help them keep warm. The early tyrannosaur specie is a five-foot-long dinosaur that has been named Dilong paradoxus. According to Mark A. Norell, a scientist from the American Museum of Natural History in New York, "The discovery of protofeathers in such a primitive tyrannosaur is giving us a much clearer picture than we had even five years ago of how these animals looked and provides even more evidence of the shared evolutionary features between nonavian dinosaurs and living birds." Over the last eight years, paleontologists have excavated dozens of dinosaurs that show traces of the featherlike structures. Such protofeathers may have eventually adapted for flight in the transition of some carnivorous dinosaurs to birds.
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|Title Annotation:||Science; carnosaurs|
|Publication:||New York Times Upfront|
|Article Type:||Brief Article|
|Date:||Dec 13, 2004|
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