Sources:

-About Education – www.dinosaurs.about.com
-Assembling The Tree of Life, Joel Cracraft and Michael J. Donohue, 2004
-Dinosaur World - www.dinosaur-world.com
-National Geographic – www.animals.nationalgeographic.com
-The Variety of Life, Colin Tudge, 2000
-Walking With Wikis – www.walkingwith.wikia.com
-Wikipedia – www.en.wikipedia.org

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

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