Did all prosauropods live in the triassic?

No, prosauropods did not all live in the Triassic period. While they first appeared during the Late Triassic, they continued to thrive and diversify during the Early Jurassic period as well. Prosauropods coexisted with other dinosaur groups, such as early sauropods, theropods, and ornithischians, during the Jurassic.

Prosauropods were a successful group of herbivorous dinosaurs that inhabited various regions around the world during the Triassic and Early Jurassic periods. They played an important role in the early diversification of dinosaurs and the establishment of complex terrestrial ecosystems.