This animal is one of the earliest plant-eating dinosaurs discovered. It probably lived at about the same time Barapasaurus roamed the earth. Cetiosaurus belonged to the same group of dinosaur as Diplodocus and probably appeared around 190 million years ago.

Scientists can tell that it is an early type, because its bones are not as well developed as other dinosaurs of its family. While others had lightweight back bones, hollowed out to save weight, Cetiosaurus had solid back bones. This observation helps scientists place Cetiosaurus several million years before Diplodocus, Brachiosaurus, and other types.

Cetiosaurus looked a lot like Camarasaurus and had a tail similar to Diplodocus. It was smaller than Camarasaurus and weighed about 10 tons. Cetiosaurus may have wallowed in rivers and lakes. Scientists are not sure how to lived. They think probably went down to the water to cool off and wash just like the hippopotamus does today.

Location: England, Morocco

Diet: Tree Leaves, ferns

Size: Length 18m (59ft)

      Weight 27 tonnes

Classification:

Family Cetiosauridae

Infraorder Sauropoda

Suborder Sauropodomorpha

Order Saurischia

Time (million years ago): 180-170