French researchers on Tuesday said they had uncovered the biggest dinosaur footprints in the world, left by giant sauropods that may have weighed 40 tons footprints was found in April this year in the Jura plateau at Plagne, near the southeastern city of Lyon the tracks formed by the footprints extend over dozens, even hundreds, of meters (yards). Further digs will be carried out in the coming years and they may reveal that the site at Plagne is one of the biggest of its kind in the world. been dated to the Upper Jurassic period, around 150 million years ago, when the area was covered by a warm, shallow sea. The prints are very big, reaching 1.20 to 1.50 meters (3.9 to 4.9 feet) across, which corresponds to animals exceeding 30 or 40 tons in weight and measuring more than 25 meters |
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