Perhaps you heard on the news last month that “the largest animal ever to walk the earth invaded New York City’s American Museum of Natural History.”

He’s the largest dinosaur ever … but how big is that? Where was he found? And how was he reconstructed?

Find out next Wednesday when PBS NATURE premieres Raising the Dinosaur Giant with host David Attenborough:

A few years ago in the Argentinean desert, a shepherd was searching for one of his lost sheep when he spotted the tip of a gigantic fossil bone sticking out of a rock. When the news reached paleontologists at the MEF Museum in Trelew, Argentina, they set up camp at the discovery site to examine it and look for more bones. By the end of the dig, they had uncovered more than 200 other huge bones from seven dinosaurs, all belonging to a new species of giant plant-eating titanosaur whose name will be announced soon.

The giant was 121 feet long, weighed 77 tons, died 101.6 million years ago, and was still growing when he died!

Visit the dig and follow the forensic research.  See 3D animations and the skeleton’s reconstruction. See how these creatures compare to our largest land animals today.  The videos (above and below) show the enormous thigh bone and examine a baby dinosaur inside the egg.

Don’t miss Raising the Dinosaur Giant on PBS, Wednesday, February 17, 2016 at 8:00pm (ET).

(YouTube videos from PBS NATURE)