Big John” is expected to fetch big bucks on the auction block in France, in October.
The skeleton, which is more than 66 million years old and is approximately 60% complete, is the largest triceratops ever found. It measures about 26 feet (8 meters) long; the skull, which is 75% complete, is 6.6 feet (2 m) wide.
French auction house Giquello will display the massive fossil to the public from Sept. 16 to Oct.
How did the attack unfold?
Frilled, tri-horned triceratops inhabited North America about 67 million to 65 million years ago during the cretaceous period (145.5 million to about 65.5 million years ago). Big John lived in what is now South Dakota on an island continent called Laramidia, which formed during the latter part of the Cretaceous when a shallow sea flooded North America’s central region.
The fossil was discovered in 2014 by paleontologist Walter W. Stein, owner of the independent commercial paleontology company PaleoAdventures in South Dakota. Stein excavated the skeleton from the Hell Creek Formation, an ancient flood plain and a rich fossil site that spans parts of Montana, North Dakota, South Dakota and Wyoming.