Dinosaurs thrived during the Triassic, Jurassic, and Cretaceous Periods. They were large - Brachiosaurus was up to 40 feet tall and 100 feet long; and small - Heterodontosaurus was about the size of a turkey.

These 48 Knowledge Cards include lots of dinosaur information The fronts of the cards feature drawings with names phonetically spelled, or dinosaur-related illustrations. The backs explain notable features, where remains have been found, what caused the creatures' extinction, etc. An evolutionary development chart of the types of dinosaurs compares human and dinosaur sizes. A boxed note highlights the length, diet, and main characteristics of the pictured dinosaur; a timeline shows the period in which the animal existed. In short: dinosaur-sized data in a fun, compact deck.