Saturnalia is an extinct genus of basal sauropodomorph dinosaur known from the Late Triassic Santa Maria Formation of Rio Grande do Sul, southern Brazil. It is one of the earliest known dinosaurs.
Saturnalia tupiniquim
Life restoration
Sauropodomorpha is an extinct clade of long-necked, herbivorous, saurischian dinosaurs that includes the sauropods and their ancestral relatives. Sauropods generally grew to very large sizes, had long necks and tails, were quadrupedal, and became the largest animals to ever walk the Earth. The prosauropods, which preceded the sauropods, were smaller and were often able to walk on two legs. The sauropodomorphs were the dominant terrestrial herbivores throughout much of the Mesozoic Era, from their origins in the Late Triassic until their decline and extinction at the end of the Cretaceous.
Sauropodomorpha
Skull of Nigersaurus taqueti and head posture in sauropodomorphs
Restoration of Panphagia, one of the most basal sauropodomorphs known.
Plateosaurus is a well-known prosauropod.