This morning, the American Museum of Natural History held a grand unveiling of its largest dinosaur fossil yet, the Titanosaur. At 122 feet long and approximately 17 feet tall, the cast stands at a diagonal, its head poking out of one of the museum’s largest gallery spaces.

The dinosaur floor of AMNH serves as this enormous creature’s New York City home. According to event organizers, with its neck up, this dinosaur is “tall enough to peek into a five-story building.”

To accompany this massive model, some of the creature’s real fossils, which were first excavated in Argentina in 2014, hang along the wall. While it is nearly impossible to recover all of the bones from any dinosaur, paleontologist Diego Pol and his team have recovered a remarkable 70% (over 200 bones!) of this one over the course of 7 different expeditions in 18 months. For the remaining 30% of the model, scientists have extrapolated from similar species and estimates based on the circumference of the dinosaur’s femur and humerus bones. These bones support the entire weight of the dinosaur—which in Titanosaur’s case is about 70 tons.

Both Pol and the exhibit’s curator Dr. Mark Norell believe that this is the fossil of a dinosaur which has not even reached full adulthood yet. Hard to believe, considering its enormity. The larger dinosaurs of this species, Pol said, are believed to start out as eggs “the size of a volleyball”. By the time dinosaurs of this species reach young adulthood, some of their bones weigh over 1,000 pounds each.

While this dinosaur is going by “Titanosaur” for now, this name is merely a placeholder; the dinosaur is a member of the titanosaur group, comprised of some of the biggest sauropods. Its scientific name cannot be released to the public until a scientific paper first releases it. The first dinosaur the museum mounted was what most people refer to as the Brontosaurus, but "by the time the mount was complete in 1905, the dinosaur’s name had been officially changed" to Apatosaurus.

If this exhibit inspires you to dig up your own dinosaur fossils, Norell says you should check out Patagonia and Central Asia. Otherwise, the model will be on display permanently at the AMNH, and the fossils, which are on loan from other museums, will remain on display for about a year.