the dinosaur kingdom

In the distant more than 100,000,000 years ago, life on earth with a group of strange creatures, this is the dinosaur. They build huge earth of the Kingdom of the dinosaurs ruled the land 1.8 million years, but with the extinction of the dinosaurs, the prosperous kingdom has mysteriously disappeared. These dinosaurs found in the what? Why is the Kingdom of dinosaur extinction? Strong curiosity and thirst for knowledge, urging us to Guangchang from dinosaurs to find that watching the barbaric ancient times.