This is an illustrated study of the excavation of Seismosaurus hallorum, one of the longest and heaviest dinosaurs ever discovered. The author, the State Palaeontologist of Utah, USA, weaves his tale of discovery with anecdotes and descriptive chapters on the technical aspects of the excavation. Part adventure narrative, the story moves from the excavation site in 1985, to current advances in research, and back to the prehistoric age, as the author...