Hello all, What's the form Quetzalcoatlus northropi and Quetzalcoatlus sp.? All of them have crest? what kind of fossil Quetzalcoatlus northropi and Quetzalcoatlus sp. have been found? ----------------------------------------------- Lida E-mail: dinosaur@vip.163.com Tel:(0)13631448145 URL: http://www.dinosaur.net.cn http://www.dinosaur.org.cn