220 million years ago, dinosaurs began to conquer the Earth. However, 65 million years ago, the era of dinosaurs suddenly ended. They all disappeared without exception. This book presents the entire dominance of dinosaurs on Earth as if it were evolving during a twenty-four hour period: They appeared at 6 in the morning. Hour by hour, new species, from carnivorous to herbivorous giants, evolved. As the day progresses, the reign of the dinosaurs reaches its peak, until, shortly after 8 in the evening, their dominance abruptly stops. Explore the era of dinosaurs and solve one of the greatest mysteries in the history of the Earth.