Fossil evidence suggests 'feathered' dinosaurs

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Samples of amber in western Canada containing feathers from dinosaurs and birds have yielded the most complete story of feather evolution ever seen.

Eleven fragments show the progression from hair-like "filaments" to doubly branched feathers of modern birds.

The analysis of the 80-million-year-old amber deposits is presented in Science magazine.

Pallab Ghosh reports.

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