How to describe dinosaurs?

The sentences describing the appearance of dinosaurs are as follows:

1, spinosaurus, named after its huge sail on its back. It is the largest carnivorous dinosaur, with a body length of 17 meters and a weight of 18 tons, which is half the size of Tyrannosaurus Rex. Its two big claws are effective hunting weapons.

Dinosaurs are the largest class of all terrestrial reptiles, and they are very suitable for living in swamps and shallow lakes. At that time, the air was warm and humid, and food was easy to find.

3. Lei Long is a monster. Its body is as heavy as six elephants. Every step it takes will make a thunderous rumble.