Dinosaurs lived on the earth millions(百万) of years ago. Now we can't see them. Luckily, we found fossils(化石). We know something about dinosaurs from the fossils.
One of the dinosaurs is called the tyrannosaurus(暴龙). It liked eating meat. It was very huge and dangerous. It was about 5 meters tall, three times taller than an adult(成人) . It was about 12 to 15 meters long and much longer than our classroom. It was about 10 tons heavy, and it was heavier than a bus. But not all the dinosaurs were very big. A compsognathus(秀颚龙)was about 60 centimeters long and 2 kilograms heavy. It was lighter than a hen. What an amazing creature (生物)!
