Prosauropoda is a group of early herbivorous dinosaurs that lived during the Late Triassic to Early Jurassic periods. They are characterized by their long necks, small heads, and large bodies, which allowed them to reach high vegetation. Prosauropods are considered ancestors to the more advanced sauropods, like Brachiosaurus and Diplodocus. These dinosaurs were primarily bipedal but could also walk on all fours. Their fossils have been found in various locations around the world, indicating they were widespread during their time. Prosauropoda played a significant role in the evolution of larger dinosaurs and contributed to the diversity of prehistoric ecosystems.