Rujukan Dinosaur_berbulu_pelepah

  1. ↑ Brown, J.W.; Van Tuinen, M. (2011). "Evolving Perceptions on the Antiquity of the Modern Avian Tree, in Living Dinosaurs". The Evolutionary History of Modern Birds. John Wiley & Sons LtD: 306–324. doi:10.1002/9781119990475.ch12. ISBN 9781119990475. 
  2. ↑ "Bald chicken 'needs no plucking'". BBC. Israel. May 21, 2002. Dicapai March 16, 2015. 
  3. ↑ Greenwold, M,; Sawyer, R, (2013), "Molecular evolution and expression of archosaurian β-keratins: Diversification and expansion of archosaurian β-keratins and the origin of feather β-keratins", Journal of Experimental Zoology, 320 (6): 393–405, doi:10.1002/jez.b.22514, PMID 23744807, 22514 
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