Sources:

-Dinosaurs Wikia - http://dinosaurs.wikia.com
-Dinosaur World - http://www.dinosaur-world.com
-The Variety of Life, Collin Tudge, 2000
-University of California Museum of Paleontology - http://www.ucmp.berkeley.edu
-Wikipedia - http://en.wikipedia.org/wiki/Hadrosaurid

Citation: García, A.I. 2015. The Tree Of Nature (Online) at http://thetreeofnature.com

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