Sauroposeidon, meaning "earthquake god lizard", named after the greek god Poseidon is a genus of a sauropod (long necked dinosaur) that lives in early cretaceous period. it is noted as one of the tallest dinosaur because Sauroposeidon can reach up 17 metres in height (56 feet). It is found in Oklahoma.

The estimated length up to 34 m (112 feet) and can weight up to 50-60 tons.