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An identification guide to the most important and best known dinosaursDo you know the difference between a Coelophysis and a Diplodocus How much larger than a human was a Spinosarus Is it likely that the Parasaurolophus made a sound like a trombone All these questions and many more are answered in Collins Gem Dinosaurs, a highly illustrated guide to the world's very wild life hundreds of millions of years ago.A fully illustrated guide to the lost world of dinosaurs, the book provides descriptions of the most significant features and habits of these fascinating prehistoric reptiles, with profiles of nearly 70 dinosaurs which include in-depth looks at how dinosaurs lived, from keeping warm to moving about.For each species information is given ono What they ateo How their size compares to ourso How they behavedo Where they livedThe book also includes explanations of what the dinosaur names mean and how to pronounce them.