The two-metre long femur, which weighs half a tonne, was found in 140 million-year-old former marshland now in the vineyards around Cognac.
The Angeac-Charente excavation site is unique in Europe and 7,500 bones belonging to 45 different dinosaur species have been found there since scientists first began excavating it in 2010.
— Le Parisien (@le_Parisien) 24 July 2019
The thigh bone is thought to have belonged to a sauropod, a herbivorous dinosaur believed to be the largest animal that ever walked the earth.
Jean-François Tournepiche, curator at the Angouleme Museum, said: “This femur is huge! And in an exceptional state of conservation. It's very moving.”
Scientists at work on the Angeac-Charente site. Photo: AFP
Ronan Allain, paleontologist at the Natural History Museum in Paris, added: “We can see the insertions of muscles and tendons, scars.
“This is a very rare find as large pieces tend to collapse on themselves, to fragment.”
Over the last decade, scientists have managed to reconstitute more than 50 percent of a sauropod using several individuals discovered at Angeac.