11/03/2013 How big were the biggest dinosaurs? Lost fossils tell a tantalising tale - BBC Walking with Dinosaurs www.walkingwithdinosaurs.com/news/editorial/biggest-dinosaurs-amphicoelias-bruhathkayosaurus/1/ 1/3 Argentinosaurus Supersaurus Giraffatitan Diplodocus Amphicoelias fragillimus below, next to a vertebra Diplodocus Amphicoelias fragillimus ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・