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.
En af de tidligst kendte sauropodomorpher, Saturnalia, var meget lille og slank (1,5 m lang), men mod slutningen af triastiden var de de største dinosaurer i deres samtid, og igennem juratiden og kridttiden fortsatte de med at vokse.