How many people does it take to build a Titanosaur? A lot, according to this video.

By Lindsey Olander
Updated: January 21, 2017
2016 Getty Images
Spencer Platt

In 2014, paleontologists working in Argentina’s Patagonian desert made one of the most exciting discoveries of our time: the remains of the largest dinosaur to have ever to roamed the Earth (that we know of). Measuring in at 122 feet long and weighing an estimated 70 tons, the long-necked herbivore—dubbed the Titanosaur—dwarfs other giants of the prehistoric world including the Apatosaurus (86 feet long; 30–40 tons) and the museum’s own 94-foot blue whale. The Titanosaur’s staggering proportions are so record-breaking, in fact, that the room for exhibit in the American Museum of Natural History in New York, which opens to the public today, had to be retrofitted in order to hold the gargantuan beast—whose neck and skull extend into the hallway of the fossil floor.

It took an astounding six months to piece together the entire skeleton, which consists of over 200 bones and was recast using lightweight fiberglass. Five original fossils, including an eight-foot-long femur, are also temporarily on view. Check out this amazing time-lapse video of the final assembly in its new museum home: