A new sauropodomorph dinosaur from the Early Jurassic of Patagonia and the origin and evolution of the sauropod-type sacrum.
The origin of sauropod dinosaurs is one of the major landmarks of dinosaur evolution but is still poorly understood.This drastic transformation involved major skeletal modifications, including a shift from the small and gracile condition of primitive sauropodomorphs to the gigantic and quadrupedal condition of sauropods.Recent findings in the Late