Who inhabited the Earth millions of years ago? Dinosaurs and many animals that no longer exist today. Prehistoric, gigantic and truly fascinating. This book divides them into categories that describe the records that make them special. You will discover which dinosaurs were the biggest and which were the fastest, but also which animals were the longest and which were the most ferocious. For each record, you will also find a comparison between the different former inhabitants of the Earth that shows the uniqueness of each of them.