Since the 1990s, paleontologists have been pulling 125-million-year-old complete dinosaur skeletons from the rocks of the Lujiatun in Northwestern China, most seemingly posed in perfect rest. This has prompted comparisons to a famous archeological site where behavior is similarly well preserved: the site of Pompeii, a town crystallized by volcanic eruption almost 2000 years ago. But when you look into the details, it turns out their residents may have experienced very different final moments.