This is the story of Earl Douglass and his discovery of the first almost complete skeleton of an Apatosaurus, one of the largest dinosaurs ever to roam Earth.

The 1909 discovery of bones protruding from a sandstone mountain in Utah led to the unearthing of other remains and proved to be one of the greatest fossil discoveries of the century.

Discusses the latest information available on dinosaurs, much of it learned from fossils found at Dinosaur National Monument.

When Jack Horner was in high school, he put together a science project that identified and compared dinosaur fossils from Montana and Alberta. Now a world-renowned dinosaur paleontologist, Dr. Horner realizes that many of his identifications in that proje

Discusses the latest information available on dinosaurs, much of it learned from fossils found at Dinosaur National Monument.

"For years sabertooth tigers have lived in the Forbidden Mountains, apart from humans and dinosaurs alike. Now an avalanche has blocked their way to their source of food, and the sabertooths are divided on what to do."--Page 4 of cover.

Illustrations and rhyming text show dinosaurs learning the names of all the colors of the rainbow.

This volume briefly describes the types of dinosaurs that lived in mountain environments.