Amazon.com description: Product Description: What ruled the skies during the age of dinosaurs? The answer: Creatures as fantastic and huge as some of the dinosaurs themselves! Quetzalcoatlus, for example, had a wingspan of 35 feet [10.5 m]as wide as the wingspan of a small airplane. Exciting illustrations and clear writing will help young readers learn how modern reptiles and birds are related to the dinosaursboth have scales, lay shelled eggs, and have similar skeletal features. Developed by literacy experts, Flying Giants features controlled text with appropriate vocabulary, grammar, and sentence structure for emergent readers.