The Dinosaurs - A History of the Earth

When do you think the dinosaurs really started appearing? The big ones appeared towards the end of the traffic period, which is count of about 200 million years ago. They didn't appear suddenly sweeping all before them. Back in the back then there were lots and lots of animals a bit like dinosaus. But as time went by and other animals became extinct, they came gradually to to the for a until at theend of the triassic,. When there was a wave of extinction, they kind of inherited the earth and the thy they stayed there for another hundred, 60 meny years.