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Dozens of newly discovered giant dinosaur footprints on a Scottish island are helping to shed light on the Jurassic reptiles' evolution. The 170 million-year-old tracks were made in a muddy lagoon off the north-east coast of what is now the Isle of Skye. Dan Damon found out more from Dr Stephen Brusatte of the University of Edinburgh's School of GeoSciences, who led the field team. (Picture: Sauropod dinosaur footprints. Credit: Jon Hoad)