Yandusaurus is a genus of dinosaur that belongs to the group of ornithopod dinosaurs. It lived approximately 170 to 165 million years ago, during the Jurassic period, in what is now China. The first fossils of Yandusaurus were discovered in the Yandu Formation in Jiangxi Province, providing paleontologists with valuable insights into this intriguing dinosaur.

Based on the available fossil evidence, Yandusaurus is estimated to have been a small to medium-sized dinosaur, reaching lengths of around 3 to 4 meters. It possessed a bipedal stance, with strong hind limbs adapted for efficient movement. Its forelimbs were relatively short, and it likely had a slender body and a long tail. However, detailed information regarding its cranial features and dentition remains limited.