Rhoetosaurus is an extinct genus of sauropod dinosaur that lived during the middle Jurassic period, having inhabited what is now eastern Australia.

Rhoetosaurus is estimated to have been about 15 meters (49 feet) long, weighing about 9 tonnes (10 tons).


The man who described Rhoetosaurus, Heber Longman, noted the primitive nature of Rhoetosaurus, and so for a long time, it was called a cetiosaurus. More recently, others have compared it to Shunosaurus, based on similar general age, but without justification. Given its supposed relationship to Shunosaurus, which had a clubbed tail, Rhoetosaurus has also been hypothesized to possess something similar. The form of the nearly complete hind foot at least suggests that lies outside the more derived Neosauropoda, but the material needs further study to determine its precise positioning in sauropod evolution.

Rhoetosaurus in The Land Before Time

Two, gray Rhoetosaurus briefly appear in the opening of The Land Before Time II: The Great Valley Adventure, where they are seeing exiting the water and following a herd of other sauropods.