English: Skull of Tyrannosaurus rex, type specimen (CM 9380) at the Carnegie Museum of Natural History (abbreviated as CMNH). The American Museum of Natural History (AMNH) had led the expedition which had found the fossil in 1902 and possessed the mount until 1941, when it was purchased by the Carnegie Museum. The latter changed the original inventory number AMNH 973 to the current CM 9380. The skull had been found largely incomplete and the AMNH, between 1902 and 1915, heavily and inaccurately restored the remains with plaster, using Allosaurus as a model because Allosaurus was the largest theropod known in the 1900s and 1910s and, thus, was considered at the time as the closest relative to Tyrannosaurus. The resulting historic restoration brought by the AMNH to the skull, as visible in this photograph, was disassembled in 2003. Photographer John Parise, from San Francisco (USA), took this photograph in the Carnegie Museum in 2001 and shared it in Commons on Flickr in 2006. The process to reassemble the skull required elements from other skulls, casts provided by other museums in the United States. It was finally put on display in a more accurate anatomical restoration in 2008.