Skeleton of triceratops on display in Paris before auctioned (4)

A skeleton of a triceratops is exposed ahead of its auction sale at Drouot auction house in Paris, France, Sept. 1, 2021. "Big John", the triceratops with an 8-meter long skeleton, is on display in Paris until Oct. 20, before be auctioned. (Photo by Aurelien Morissard/Xinhua)