Paleontologist Richard Leyster is studying the dinosaur-fossil discovery of a lifetime when a stranger comes into his office with an ice cooler and an offer: a mysterious and dangerous job that pays no better than Leyster's beloved current position at the Smithsonian. He rejects the offer and the stranger departs, leaving the cooler. Leyster opens the cooler and finds the head of a just-slain stegosaur. It really is an offer he can't refuse: a job that will allow him to study living dinosaurs. But the stranger has disappeared, and Leyster has no idea where to find him.

Expanded from his Hugo Award-winning story "Scherzo with Tyrannosaur," Michael Swanwick's Bones of the Earth is a time-travel novel as exciting as Jurassic Park and far more intelligent. In addition to the Hugo, Michael Swanwick has won the Nebula, World Fantasy, and Theodore Sturgeon Awards. His previous books include the novels In the Drift, Vacuum Flowers, and Griffin's Egg, and his collections include Gravity's Angels, A Geography of Unknown Lands, and Moon Dogs, among others. —Cynthia Ward