It seems that in the whirlwind of millennia, bizarre monsters are spinning in a crazy round dance, tearing each other apart, randomly replacing one another. But no, that's not how evolution works! There are enough monsters, but there is a certain logic in everything, and its comprehension is the essence of paleontology. In the first part of the trilogy by the popular Russian scientist Stanislav Drobyshevsky, you will find the history of the Earth in the Precambrian and Paleozoic: atmospheric features, ancient species, the origin of life and terrible cataclysms.The publisher's layout has been saved in a4.pdf format.