In the vallon de l'Aiguebelle (an ever-flowing stream, even during the dryest droughts), fossils of plants and fishes (Dapalis macrurus) have been uncovered.

A tropical climate had created a rich fauna and flora, fossilized in thin plates of schistous limestone up to the Oligocene.

The commune of Céreste is today inside the perimeter of the Géologique du Luberon National Nature Reserve, due to the proximity with exceptional fossil sites.

Traditionally considered to be donkey tracks, it was discovered that the footprints were made by Anchitherium,[5] an extinct genus of Equidae who lived roughly 20 millions of years ago.

The commune of Murs contains a locality known as Le Puy, part of the Géologique du Luberon National Nature Reserve.

Traces of Palaeotherium magnum, Anchilophus radegondensis, Anoplotherium commune and A. latipes, Xiphodon gracile, Pterodon spp.