The face of our planet is constantly changing. The whole world is in motion. Millions of years ago, the Earth had completely different vegetation, wildlife, and climatic conditions. Today, people live here, and more than 200 million years ago, the world was ruled by huge reptilian dinosaurs. But who were these ancient lords, how did they appear, and why did they eventually disappear from the face of the earth? The bookmarkbook “Dinosaurs” will be your guide in this fascinating prehistoric journey. You will get acquainted with incredible Cambrian monsters, armored triceratops and long-necked sauropods, visit the world of reptiles and giant lizards. Learn about the life of dinosaurs — who ate whom, where they lived — and the discoveries of paleontologists. You will read about mammoths and their neighbors of the Pleistocene epoch, already so similar to the modern inhabitants of our planet. And in the end, we will tell you how man appeared and developed.