The American Museum of Natural History in New York unveiled the world's first mounted skeleton of Tyrannosaurus rex, assembled largely from fossils collected by fossil hunter Barnum Brown in Montana. The towering, fearsome reconstruction, standing upright in the fashion of the day, captured public imagination and cemented the species as the defining image of prehistoric predation for the next century.
Barnum Brown, one of the most flamboyant fossil hunters of his era, had discovered the first partial T. rex skeleton in Montana's Hell Creek Formation in 1902, and a more complete specimen in 1908. The museum's chief paleontologist, Henry Fairfield Osborn, had already given the animal its thundering name — 'tyrant lizard king' — in 1905, but it was the physical mounting of the bones, towering over visitors in a menacing bipedal stance, that turned Tyrannosaurus into a cultural sensation.
The mount, tail dragging along the ground as scientists then believed, would remain the canonical T. rex pose in museums, textbooks, and films for the better part of a century, even after later research showed the animal held its tail aloft and its spine roughly horizontal, more like a bird than a kangaroo. Regardless of anatomical accuracy, the unveiling gave the American public its first encounter with an animal that combined almost mythological scale and violence with the credibility of hard science.
Osborn and Brown's marketing instincts were considerable; the museum understood that a terrifying skeleton would draw crowds, donations, and headlines, and it did. T. rex has never really left the public stage since.
Key people: Barnum Brown, Henry Fairfield Osborn