Sue--the Tyrannosaurus rex fossil in Stanley Field Hall at the Field Museum--is saying goodbye--for now.
Piece by piece, more than 200 elements will be painstakingly moved--starting with the feet, said exhibitions registration assistant Lisa Geiger.
It will take a month for Sue to be removed--which has stood in its spot greeting visitors at the museum for more than a decade.
"It's a bit sad to see Sue go, considering that it's such an iconic fossil," said Kevin Siever, a visitor at the museum Monday.
Sue's posture will be adjusted and then rebuilt in her own exhibit, the museum said.
Going in her spot? A Patagotitan fossil--the biggest dinosaur ever discovered, Bill Simpson, head of geological collections said.
"Sue is about 40 feet long," he said. "Patagotitan is 122 feet long."
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And because it will be a cast of the dinosaur, you'll actually be able to touch it, unlike Sue who was guarded by a fence.
"You'll be able to walk under the belly of Patagotitan," Simpson said.
Starting in June Stanley Field Hall will look a lot different.