"Through carefully leveled text, maps, and powerful illustrations, explores the habitats, food, and other information about dinosaurs in the Triassic period"--
"Through carefully leveled text, maps, and powerful illustrations, explores the habitats, food, and other information about dinosaurs in the Jurassic period"--
"Through carefully leveled text, maps, and powerful illustrations, explores the habitats, food, and other information about dinosaurs in the Cretaceous period"--