Chemical ghost of 120million years-old bird

This is the 120 million year-old fossil of Confuciusornis sanctus, a bird from China; the earliest known bird with a beak. About the size of a pigeon, it had long twin tail-feathers strongly suggestive of sexual selection. This bird was one of a flock that was caught in a volcanic explosion and ended up fossilised at the bottom of a lake. The fossil shows clear impressions of feathers, bones and soft tissues but what is even more amazing, there are chemicals which indicate its colour in life.
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