"This Western thriller rolls . . .with ease and true grit." -- Kirkus Reviews Eons past, an ancient creature the size of a bunkhouse lived out a solitary life and died all alone in a rugged canyon. Millennia later that canyon occupied an isolated corner of C.L. McSween's Rocking S Ranch. That's when McSween decided to dam up the canyon to provide water for his cattle... Paleontology is a brand-new science in 1877, and...