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WikiPedia: Utahraptor http://www.academia.edu/225747/A_large_dromaeosaur... //www.ncbi.nlm.nih.gov/pubmed/17823350 //dx.doi.org/10.1126%2Fscience.1144066 //dx.doi.org/10.1371%2Fjournal.pone.0036790 http://kuer.org/post/senate-gives-utahraptor-roar-... https://www.deseretnews.com/article/900010113/sena... https://commons.wikimedia.org/wiki/Category:Utahra...