Blue tones in fossilized prehistoric feathers

<div data-thumb = "https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2019/bluecolorton.jpg" data-src = "https://3c1703fe8d.site.internapcdn.net/ newman / gfx / news / 2019 / bluecolorton.jpg "data-sub-html ="Eocoracias brachyptera fossil sample used for this study. The rich black texture on the surface …

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