(CNN) If you thought the dinosaurs in "Jurassic Park" were big, wait until you see the newly discovered 122-foot-long dinosaur that is displayed at the American Museum of Natural History.

This dino surpasses the museum's model of a blue whale by about 30 feet.

The prehistoric creature is so big it cannot even fit in the gallery space. Part of its 39-foot-long neck will extend through the passageway to greet visitors.

The mysterious dinosaur was discovered in the Patagonian desert region of Argentina in 2014. A team from the Museo Paleontologico Egidio Feruglio in Argentina led by José Luis Carballido and Diego Pol spent over 18 months excavating the site, where they unearthed the new species.

Femur bone of dinosaur discovered in Patagonia.

"This animal is so new it doesn't even have an official species name yet," said Mark Norell, chairman and Macaulay Curator at the natural history museum.