About two years ago, Damien Boschetto was walking his dog in a forest near Cruzy in southern France when he noticed a large bone poking out from an eroded cliff. Suspecting it might belong to a dinosaur, the amateur paleontologist quickly alerted experts at the Cruzy Museum. His hunch was correct: the fossil turned out to be the pelvic bone of a titanosaur, one of the largest dinosaurs ever to roam Earth.