A fossil containing skin impressions made by a dinosaur nearly 66 million years ago has been found in Spain. Researchers believe the impressions in the sandstone rock are from the scales of a dinosaur that died in the mud in the Late Cretaceous period.

The fossil was discovered by scientists in the Vallcebre near Barcelona, where they were conducting geological research to study the origins of rock sediments. Vallcebre was a muddy region during the Late Cretaceous period and, it is thought, over the course of thousand years, the mud petrified to form sandstone, preserving the dinosaur scale impression that was recently discovered.

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