Wankel didn't have time to extract her find that day, but she didn't forget about it – she returned a month later and dug out a set of long bones, which she drove to the Museum of the Rockies, hundreds of miles to the west. The director of palaeontology agreed to take a quick look. They soon realised these were no ordinary dinosaur fossils, they were T. rex arm bones, complete with the mystery lower half that had been missing for so long.

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