Mamenchisauridae

• OmeisauridaeWilson, 2002

Mamenchisauridae is a family of sauropoddinosaurs belonging to the Eusauropoda known from the Jurassic and Early Cretaceous of Asia and Africa. Mamenchisaurids are characterized by their proportionately extremely long necks. Some members of the group reached gigantic sizes, amongst the largest of all sauropods.