Ornithopoda is a group of herbivorous dinosaurs known for their bird-like characteristics. They lived during the Late Jurassic to the Late Cretaceous periods and included well-known species like Iguanodon and Hadrosaurus. Ornithopods were characterized by their beaks, which helped them efficiently consume plants, and many had specialized teeth for grinding vegetation. These dinosaurs were typically bipedal, meaning they walked on two legs, although some could also move on all fours. Ornithopods exhibited a range of sizes and adaptations, allowing them to thrive in various environments. Their fossils have been found on every continent, highlighting their widespread distribution during the age of dinosaurs.