There are three rare dinosaur skeletons within the 85-lot Natural History sale at Sotheby’s Paris. Each has been confirmed by Eric Mickeler, Sotheby’s consultant, and certified by experts Dr. Oliver Rauhut of the Bayerische Staatssammlung München, Dr. Roberto Zorzin of the Musée d’Histoire Naturelle of Verona, and paleontologist Pete Larson.

Shown here is Prosaurolophus maximus, which exhibits important examples of fossilized skin. It is joined by one of only two known specimens of Suuwassae Emiliae: a sub-specie of the herbivorous Diplodocus, and a Tenontosaurus. The latter is only partially cleared for exhibit to allow for further study, as the skeleton remains 98 per cent intact.