Take%20to%20the%20skies%20with%20pterosaurs%2C%20evade%20erupting%20volcanoes%20and%20vicious%20Velociraptors%2C%20and%20encounter%20the%20king%20of%20lizards%2C%20T-Rex%2C%20as%20you%20delve%20into%20the%20prehistoric%20world%20of%20the%20dinosaurs%20with%20this%20superb%20selection%20of%20mazes.%20Each%20maze%20is%20more%20challenging%20than%20the%20last%2C%20from%20savage%20sea%20monsters%20to%20Spinosaurus%20swamps%2C%20and%20all%20the%20answers%20are%20at%20the%20back%20of%20the%20book.