Articles/Archaeology/Prehistoric Remarkable Discovery: 6.5-Foot Sauropod Thigh Bone Unearthed, Weighing Half a Ton, Reveals France’s 140-Million-Year-Old Dinosaur History Discover the spellbinding story of the recent discovery in France: a colossal 6.5ft sauropod dinosaur thigh bone from 140 million years ago. December 8, 2023