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We know a lot about dinosaurs but there’s one question that has plagued paleontologists for decades: what color were they?

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Thanks to Julio Lacerda and Studio 252mya for the Sinosauropteryx illustrations. You can find more of Julio's work here: https://252mya.com/gallery/julio-lacerda

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References:
http://www.nytimes.com/2010/01/28/sci...
http://rsbl.royalsocietypublishing.or...
https://www.nature.com/nature/journal...
http://science.sciencemag.org/content...
http://science.sciencemag.org/content...
http://www.sciencedirect.com/science/...
https://www.ncbi.nlm.nih.gov/pubmed/2...
http://news.nationalgeographic.com/ne...
http://palaeo.gly.bris.ac.uk/melanoso...
http://news.yale.edu/2008/07/08/fossi...
http://www.nature.com/news/2010/10012...
https://www.coursera.org/learn/dino10...
http://news.yale.edu/2010/02/04/yale-...
http://www.sciencemag.org/news/2016/0...