The Titanosaur, a 122-Foot-Long Dinosaur Skeleton Has Been Revealed at American Museum of Natural History

This is one of the largest new dinosaurs ever discovered. It's so new, it hasn't even been formally named by paleontologists.  It probably weighed about 70 tons.  Now a cast of the bones is on display at the American Museum of Natural History. 

Here's a video of how they put it all together: