The British auction house Christie’s plans to sell the skeleton of one of the largest known Tyrannosaurus rexes in early October, the company said on Wednesday.
The dinosaur known as “Stan”, which is about 67 million years old, was discovered in 1987 in South Dakota, in the US, by amateur paleontologist Stan Sacrison.
“He showed it to scientists at the time who unfortunately misidentified it as a triceratops,” James Hyslop, Christie's head of science and natural history, said.
Triceratops remains are relatively common in the paleontological world, so the bones failed to garner much interest until Sacrison took them to the Black Hills Institute in South Dakota in 1992.
Researchers there “realised pretty quickly that they had something special in their hands,” said Hyslop. They recategorised Stan as a T rex and mounted a new search to uncover the rest of the bones. They recovered 188 out of an estimated 300 total for any T rex, Hyslop said.