One of the earliest known sauropodomorphs, Saturnalia, was small and slender (1.5 metres, or 5 feet long); but, by the end of the Triassic, they were the largest dinosaurs of their time, and throughout the Jurassic and Cretaceous they kept on growing.
Najstariji pripadnik Sauropodomorpha, Saturnalia, bio je malen i vitak (dug oko 1,5 m), ali krajem trijasa bili su najveći dinosauri svog doba, a nastavili su rasti i tijekom jure i krede.