On an island off Costa Rica there exists a hush-hush colony of giant animals which attracts the attention of two expeditions. The first one, including children, is led by a paleontologist, the other is made up of evil scientists who want to do experiments. The animals rout both without much concern for their motives.

In this recently discovered Crichton novel, the year is 1876. Among the warring Indian tribes and lawless gold-rush towns of America's western territories, two paleontologists pillage the Wild West. They're hunting for dinosaur fossils, while surveilling, deceiving, and sabotaging each other in a rivalry that will come to be known as the Bone Wars. Into this treacherous territory plunges the arrogant and entitled Yale student William Johnson. Determined...

On an island off Costa Rica there exists a hush-hush colony of giant animals which attracts the attention of two expeditions. The first one, including children, is led by a paleontologist, the other is made up of evil scientists who want to do experiments. The animals rout both without much concern for their motives.--

The saga of two cultures fated to struggle for control of the earth: the Yilane--cold-blooded intelligent reptiles and the Tanu--warm-blooded humans.