Dinosaurs may be the stars of the show, but the book is truly comprehensive, with fossil plants, invertebrates, amphibians, fish, birds, reptiles, mammals, and even early bacteria conjuring up an entire past world.
To put all of these extinct species in context, the book explores geological time and the way life forms are classified. It also looks at how fossils preserve the story of evolution and how that story can be deciphered.
The "Young Earth" chapter explains how forces shaped Earth and steered the course of life. The main part of the book, "Life on Earth," lays out and catalogs the rich story of life, from its beginnings 4 billion years ago, through each geological period, such as the Jurassic and Cretaceous, to the present.
