Open this book and a massive T. Rex springs out, flashing a startling jawful of jagged teeth. Turn the next spread and a ravishing raptor unfurls and appears to fly off the edge of the page. Inside the amazing Encyclopedia Prehistorica: Dinosaurs are "shield bearers" in full-body armor, creatures with frilly headgear, and weighty, long-necked giants. There are even amusing tidbits on the history of paleontology itself-like a pop-up version of a Victorian...