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    Research Progress Dinosaur Wore Primitive Down Coat
By Jeanna Bryner, Senior Writer
  posted: 12 January 2009 05:00 pm ET
  When alive, Beipiaosaurus would have sported shorter feathers on its entire body with tufts of long, broad feathers on its head, tail and trunk. Credit: Reconstruction by Zhao Chuang and Xing Lida.
  The evolution of the flashy down coat h...
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