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An impressive detail found in a piece of amber that’s 100 million years old

A feather coming from the tail of a bird that lived about 100 million years ago was discovered in an amber by a team of scientists from China and Canada. Unlike most of the tail feathers found in compression fossils, the amber has up to three-dimensional structure and contains more information. The feather dates back to the beginning of the Cretaceous, an important period for bird evolution. During this period, certain types of dinosaurs...