Vast dinosaur footprints found in quarry date back 166 million years | BBC News

About 200 huge footprints, left by vast dinosaurs in the Jurassic period 166 million years ago, have been found in a limestone quarry in Oxfordshire in England. They reveal the comings and goings of two different types of dinosaurs that are thought to be a long-necked sauropod called Cetiosaurus and the smaller meat-eating Megalosaurus. The longest trackways are 150m in length, but they could extend much further as only part of the quarry has been excavated. The tracks were first spotted by Gary Johnson, a worker at Dewars Farm Quarry, while he was driving a digger. "I was basically clearing the clay, and I hit a hump, and I thought it's just an abnormality in the ground," he said, pointing to a ridge where some mud has been pushed up as a dinosaur's foot pressed down into the earth. Clive Myrie presents BBC News at Ten reporting by Rebecca Morelle. Subscribe here: http://bit.ly/1rbfUog For more news, analysis and features visit: www.bbc.com/news #BBCNews