Knowledge Encyclopedia Dinosaur!An updated edition of the best selling children's dinosaur encyclopedia. Journey back to the Mesozoic Era, when fearsome dinosaurs roamed the land, menacing pterosaurs patrolled the skies, and the seas were filled with awesome reptiles. See every type of prehistoric animal in unprecedented detail and with stunning realism. Find out how these fascinating creatures lived, why they died out, and what their fossil traces tell us. This fully revised