The Dinosaur Quarry. Dinosaur National Monument, Colorado-Utah

A concise guide presents the fossil-rich ledge near Split Mountain and the Green River, tracing the geology, fossil types, and field history of a major dinosaur-bearing deposit. It explains how bones were concentrated, buried, and mineral-replaced to become durable fossils, describes the Jurassic landscape and animals represented, and summarizes theories about later extinction. The pamphlet reviews discovery, quarrying and conservation efforts, excavation methods, and how uplift and erosion exposed the bones, and closes with directions for visitors and recommendations for further reading.