The Mexican Meteorock
One day all the dinosaurs were on land they saw something in the sky. It looked like a big rock. It was falling down. All of the dinosaurs didn't know what it was. They thought that it was a big rock that would make everything warm for them, but it was really a meteorock.
And it fell down and made a huge hole in the earth. All of the dinosaurs fell into the hole and another meteorock fell and blocked them in.
This is why there are no more dinosaurs.