This lost novella by the century's most renowned paleontologist has been called the greatest time-travel story in more than one hundred years. Vanishing from Earth on February 30, 2162, while working on a problem of quantum theory, research chronologist Sam Magruder is thrown back 80 million years in time. Endowed with the intelligence of a twenty-second-century man, Magruder struggles to survive, feeding on scrambled turtle eggs and diligently recording his observations on a stone-slab diary, even as menacing tyrannosaurus try to gnaw off his limbs. Filled with magnificent descriptions of the dinosaurs as only Simpson himself could render them, <i>The Dechronization of Sam Magruder</i> is not only a classic time-travel tale but a philosophical work that astutely ponders the complexities of human existence and achievement.