The world's largest skeleton reconstruction of a pterosaur 'Quetzalcoatlus northropi ' is shown behind Janet Waddington, the assistant curator, Natural History, at The Royal Ontario Museum in Toronto, July 17, 2008. The pterosaur skeleton of one of the largest known flying creatures of all time measures six metres (20 feet) long and has a wingspan of 12 metres (39 feet). [Agencies]
