The layers of rock forming the plain, running from Mèze to Montagnac, had been forced up long after they were originally formed as a consequence of the Pyrenean uplift. The rocks date from the Campanian-Maastrichtian (72 to 65 million years ago) and Danian (65 to 53 million years ago) Stages at the end of the Cretaceous Period, being fossilised during the transition from the Mesozoic to the Tertiary Eras, just at the moment dinosaurs became
extinct.
The paleontological site is one of the most important in Europe.
The scientific discoveries there are proving to be of the greatest importance in the reconstitution of the fauna of the ecosystems 70 millions years
ago.
Museum
