Dinosaurs of North America

Describes the dinosaurs of the period from 140 to 65 million years ago when the earth underwent dramatic changes.

Describes what is known about three different types of dinosaurs that lived in parts of the United States and Canada from 140 to 65 million years ago.

Describes what is known about four different kinds of dinosaurs that lived in parts of the United States millions of years ago.

Describes four dinosaurs from the Jurassic period including Allosaurus, Dilophosaurus, Ceratosaurus, and Coelurus.